CVE-2022-20943

mediumpriority · track · 23EPSS 0.010 · 62 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.98% (62nd) EPSS

CVSS 5.8 · medium

Is it mine?

90 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

Multiple vulnerabilities in the Server Message Block Version 2 (SMB2) processor of the Snort detection engine on multiple Cisco products could allow an unauthenticated, remote attacker to bypass the configured policies or cause a denial of service (DoS) condition on an affected device. These vulnerabilities are due to improper management of system resources when the Snort detection engine is processing SMB2 traffic. An attacker could exploit these vulnerabilities by sending a high rate of certain types of SMB2 packets through an affected device. A successful exploit could allow the attacker to trigger a reload of the Snort process, resulting in a DoS condition. Note: When the snort preserve-connection option is enabled for the Snort detection engine, a successful exploit could also allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network. The snort preserve-connection setting is enabled by default. See the Details ["#details"] section of this advisory for more information. Note: Only products that have Snort 3 configured are affected. Products that are configured with Snort 2 are not affected.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Cyber Visioncisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco ASA 5500-X Series Firewallscisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 1000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 2100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Secure Firewall Threat Defense Virtualcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco ASA 5500-X Series Firewallscisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 1000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 2100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Secure Firewall Threat Defense Virtualcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco ASA 5500-X Series Firewallscisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Firepower 1000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Firepower 2100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Secure Firewall Threat Defense Virtualcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco ASA 5500-X Series Firewallscisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Firepower 1000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Firepower 2100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Secure Firewall Threat Defense Virtualcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
WorkaroundCisco Cyber Visioncisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)cisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco ASA 5500-X Series Firewallscisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 1000 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 2100 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 4100 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 9000 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Secure Firewall Threat Defense Virtualcisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)cisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco ASA 5500-X Series Firewallscisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 1000 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 2100 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 4100 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 9000 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Secure Firewall Threat Defense Virtualcisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)cisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco ASA 5500-X Series Firewallscisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Firepower 1000 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Firepower 2100 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Firepower 4100 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Firepower 9000 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1 when installed on Cisco Secure Firewall Threat Defense Virtualcisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)cisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco ASA 5500-X Series Firewallscisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Firepower 1000 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Firepower 2100 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Firepower 4100 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Firepower 9000 Seriescisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
WorkaroundCisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1 when installed on Cisco Secure Firewall Threat Defense Virtualcisco_csaf
There is a workaround that addresses these vulnerabilities. To remove the attack vector for these vulnerabilities for Cisco FMC Software-managed devices and Cisco Defense Orchestrator-managed devices, configure a fastpath prefilter rule to bypass the Snort detection engine. To remove the attack vector for these vulnerabilities for Cisco Firepower Device Manager (FDM)-managed devices, configure an access control rule to bypass the Snort detection engine. Workaround for Cisco FMC Software-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco FMC Software-managed devices, do the following: Log in to the FMC web interface. From the Policies menu, under the Access Control section, choose Prefilter. Choose New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, choose Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445 and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco FMC Software-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Prefiltering and Prefilter Policies ["https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/access-prefilter.html"] chapter of the Firepower Management Center Device Configuration Guide. Workaround for Cisco FDM-Managed Devices Fastpath is not supported on Cisco FDM-managed devices. Instead, set an access control policy with an action of trust for the appropriate ports. To configure an access control policy to bypass SMB traffic for Cisco FDM-managed devices, do the following: Log in to the Cisco FDM web interface. From the Policies menu, choose Access Control. Create a new policy by clicking the plus (+) sign. Enter a name and under the Action drop-down menu, choose Trust. In the Port section, click the plus (+) sign. Select Create new Port. Enter a name, protocol type, and port number for each of the following ports: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Once the ports have been created, select the four ports to be added to the rule by selecting their names. Click OK when done. Click OK to add the policy. Deploy changes to Cisco FTD Software. For more information, see the Access Control Chapter ["https://www.cisco.com/c/en/us/td/docs/security/firepower/710/fdm/fptd-fdm-config-guide-710/fptd-fdm-access.html"] of the Cisco Firepower Threat Defense Configuration Guide for Firepower Device Manager. Workaround for Cisco Defense Orchestrator-Managed Devices To configure a fastpath prefilter rule for SMB traffic for Cisco Defense Orchestrator-managed devices, do the following: Log in to the Cisco Defense Orchestrator web interface. From the Policies menu, choose FTD Policies. From the Policies menu, under the Access Control section, choose Prefilter. Click New Policy. Enter the Name and Description and click Save. In the resulting window, ensure that Default Action: Tunnel Traffic is set to Analyze all tunnel traffic. Click Add Prefilter Rule. In the resulting window, enter a rule Name and ensure the Enabled box is checked. From the Action drop-down menu, select Fastpath. Configure the policy under the Interfaces, Networks, and Vlan Tags tabs for SMB traffic on the affected network. Click the Port tab. Enter the following destination ports for SMB traffic: TCP (6):138, TCP (6):139, TCP (6):445, and UDP (17):137. Click Add to add the policy. Click Save to save the policy. To associate the SMB prefilter policy with the access control policy deployed on Cisco Defense Orchestrator-managed devices, do the following: From the Policies menu, under the Access Control section, choose Access Control. Find the policy of interest. Click the Edit icon. Click the name next to Prefilter Policy. Choose the name of the newly created SMB prefilter policy from the drop-down menu. Click OK. For more information, see the Cisco Defense Orchestrator website ["https://docs.defenseorchestrator.com/"]. While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.

cvss

Technical severity, 0–10. One row per scoring source.

5.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Lprimary · NVD / NIST USexploitability 3.9 · impact 1.4

v3.15.8mediumAV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Lsecondary · FSTEC (BDU) RU

v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Lsecondary · ENISA EU

v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Lsecondary · psirt@cisco.com USexploitability 3.9 · impact 1.4

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:Usecondary · CVSS-BT (t0sche)

v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Lsecondary · Cisco PSIRT US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-244USCWE-244US

affected products (90)

Products and version ranges known to be affected.

showing 20 of 90

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-snort-smb-3nfhJtrMultiple Cisco Products Snort SMB2 Detection Engine Policy Bypass and Denial of Service Vulnerabilities2022-11-09csaf · cisco_csafUS
Multiple vulnerabilities in the Server Message Block Version 2 (SMB2) processor of the Snort detection engine on multiple Cisco products could allow an unauthenticated, remote attacker to bypass the configured policies or cause a denial of service (DoS) condition on an affected device. These vulnerabilities are due to improper management of system resources when the Snort detection engine is processing SMB2 traffic. An attacker could exploit these vulnerabilities by sending a high rate of certain types of SMB2 packets through an affected device. A successful exploit could allow the attacker to trigger a reload of the Snort process, resulting in a DoS condition. Note: When the snort preserve-connection option is enabled for the Snort detection engine, a successful exploit could also allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network. The snort preserve-connection setting is enabled by default. See the Details ["#details"] section of this advisory for more information. Note: Only products that have Snort 3 configured are affected. Products that are configured with Snort 2 are not affected. Cisco has released software updates that address these vulnerabilities. There are workarounds that address these vulnerabilities. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-smb-3nfhJtr ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191106-wsa-unauth-devreset"] This advisory is part of the November 2022 release of the Cisco ASA, FTD, and FMC Security Advisory Bundled publication. For a complete list of the advisories and links to them, see Cisco Event Response: November 2022 Semiannual Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74838"].

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf NVD CVE.org MITRE

published 2022-11-15modified 2026-08-11

references (8)

External citations — patches, advisories, analysis.

scry

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