Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software IP Fragment Memory Leak Vulnerability
Update from October 22nd, 2020: Cisco has become aware of a new Cisco Adaptive Security Appliance vulnerability that could affect the fixed releases recommended for code trains 9.13 and 9.14 in the Fixed Software ["#fs"] section of this advisory. See the Cisco Adaptive Security Appliance Software SSL/TLS Denial of Service Vulnerability ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ssl-dos-7uZWwSEy"] for additional information. A vulnerability in the IP fragment-handling implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a memory leak on an affected device. This memory leak could prevent traffic from being processed through the device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper error handling when specific failures occur during IP fragment reassembly. An attacker could exploit this vulnerability by sending crafted, fragmented IP traffic to a targeted device. A successful exploit could allow the attacker to continuously consume memory on the affected device and eventually impact traffic, resulting in a DoS condition. The device could require a manual reboot to recover from the DoS condition. Note: This vulnerability applies to both IP Version 4 (IPv4) and IP Version 6 (IPv6) traffic. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is part of the October 2020 Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication, which includes 17 Cisco Security Advisories that describe 17 vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: October 2020 Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74302"].
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2020-3373US | high8.6 | — | ||
A vulnerability in the IP fragment-handling implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unau… | ||||
references
External citations — patches, advisories, analysis.
- Cisco Adaptive Security Appliance Software SSL/TLS Denial of Service Vulnerabilityexternal
- Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software IP Fragment Memory Leak Vulnerabilityself
- Cisco Security Vulnerability Policyexternal
- considering software upgradesexternal
- Cisco Event Response: October 2020 Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publicationexternal
- https://www.cisco.com/c/en/us/products/end-user-license-agreement.htmlexternal
- https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.htmlexternal
- Cisco Security Advisories pageexternal
remediations (32)
- FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.4.2 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.4.2 when installed on Cisco ASA 5500-X Series Firewalls
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.4.2 when installed on Cisco Adaptive Security Virtual Appliance (ASAv)
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.4.2 when installed on Cisco Firepower 2100 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.4.2 when installed on Cisco Firepower 4100 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.4.2 when installed on Cisco Firepower 9000 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14.1.15 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14.1.15 when installed on Cisco ASA 5500-X Series Firewalls
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14.1.15 when installed on Cisco Adaptive Security Virtual Appliance (ASAv)
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14.1.15 when installed on Cisco Firepower 1000 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14.1.15 when installed on Cisco Firepower 2100 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14.1.15 when installed on Cisco Firepower 4100 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14.1.15 when installed on Cisco Firepower 9000 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.22 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.22 when installed on Cisco ASA 5500-X Series Firewalls
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.22 when installed on Cisco Adaptive Security Virtual Appliance (ASAv)
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.22 when installed on Cisco Firepower 2100 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.22 when installed on Cisco Firepower 4100 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.22 when installed on Cisco Firepower 9000 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.25 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.25 when installed on Cisco ASA 5500-X Series Firewalls
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.25 when installed on Cisco Adaptive Security Virtual Appliance (ASAv)
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.25 when installed on Cisco Firepower 2100 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.25 when installed on Cisco Firepower 4100 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.25 when installed on Cisco Firepower 9000 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Threat Defense (FTD) Software 6.6.0.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Threat Defense (FTD) Software 6.6.0.1 when installed on Cisco ASA 5500-X Series Firewalls
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Threat Defense (FTD) Software 6.6.0.1 when installed on Cisco Firepower 1000 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Threat Defense (FTD) Software 6.6.0.1 when installed on Cisco Firepower 2100 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Threat Defense (FTD) Software 6.6.0.1 when installed on Cisco Firepower 4100 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Threat Defense (FTD) Software 6.6.0.1 when installed on Cisco Firepower 9000 Series
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Secure Firewall Threat Defense (FTD) Software 6.6.0.1 when installed on Cisco Secure Firewall Threat Defense Virtual
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
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