Cisco Wireless LAN Controller AireOS Software Denial of Service Vulnerability
A vulnerability in the memory buffer of Cisco Wireless LAN Controller (WLC) AireOS Software could allow an unauthenticated, adjacent attacker to cause memory leaks that could eventually lead to a device reboot. This vulnerability is due to memory leaks caused by multiple clients connecting under specific conditions. An attacker could exploit this vulnerability by causing multiple wireless clients to attempt to connect to an access point (AP) on an affected device. A successful exploit could allow the attacker to cause the affected device to reboot after a significant amount of time, resulting in a denial of service (DoS) condition. Cisco has released software updates that address this vulnerability. There is a workaround that addresses this vulnerability.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-20251US | medium5.3 | — | ||
A vulnerability in the memory buffer of Cisco Wireless LAN Controller (WLC) AireOS Software could allow an unauthenticated, adjacent attacker to cause memory leaks that could event… | ||||
references
External citations — patches, advisories, analysis.
remediations (18)
- FixedCisco Mobility Express
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Wireless LAN Controller (WLC) 8.10.151.0 when installed on Cisco Virtual Wireless Controller
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Wireless LAN Controller (WLC) 8.10.162.0 when installed on Cisco Virtual Wireless Controller
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Wireless LAN Controller (WLC) 8.10.170.0 when installed on Cisco Virtual Wireless Controller
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Wireless LAN Controller (WLC) 8.10.171.0 when installed on Cisco Virtual Wireless Controller
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Wireless LAN Controller (WLC) 8.10.181.0 when installed on Cisco Virtual Wireless Controller
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Wireless LAN Controller (WLC) 8.10.182.0 when installed on Cisco Virtual Wireless Controller
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Wireless LAN Controller (WLC) 8.10.183.0 when installed on Cisco Virtual Wireless Controller
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Wireless LAN Controller (WLC) 8.10.185.0 when installed on Cisco Virtual Wireless Controller
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - WorkaroundCisco Mobility Express
There is a workaround that addresses this vulnerability. Administrators can disable the Random Mac Filtering feature on the affected device using the following CLI command: 3500-3-AX (config-wlan)# no local-admin-mac deny 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 Wireless LAN Controller (WLC) 8.10.151.0 when installed on Cisco Virtual Wireless Controller
There is a workaround that addresses this vulnerability. Administrators can disable the Random Mac Filtering feature on the affected device using the following CLI command: 3500-3-AX (config-wlan)# no local-admin-mac deny 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 Wireless LAN Controller (WLC) 8.10.162.0 when installed on Cisco Virtual Wireless Controller
There is a workaround that addresses this vulnerability. Administrators can disable the Random Mac Filtering feature on the affected device using the following CLI command: 3500-3-AX (config-wlan)# no local-admin-mac deny 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 Wireless LAN Controller (WLC) 8.10.170.0 when installed on Cisco Virtual Wireless Controller
There is a workaround that addresses this vulnerability. Administrators can disable the Random Mac Filtering feature on the affected device using the following CLI command: 3500-3-AX (config-wlan)# no local-admin-mac deny 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 Wireless LAN Controller (WLC) 8.10.171.0 when installed on Cisco Virtual Wireless Controller
There is a workaround that addresses this vulnerability. Administrators can disable the Random Mac Filtering feature on the affected device using the following CLI command: 3500-3-AX (config-wlan)# no local-admin-mac deny 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 Wireless LAN Controller (WLC) 8.10.181.0 when installed on Cisco Virtual Wireless Controller
There is a workaround that addresses this vulnerability. Administrators can disable the Random Mac Filtering feature on the affected device using the following CLI command: 3500-3-AX (config-wlan)# no local-admin-mac deny 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 Wireless LAN Controller (WLC) 8.10.182.0 when installed on Cisco Virtual Wireless Controller
There is a workaround that addresses this vulnerability. Administrators can disable the Random Mac Filtering feature on the affected device using the following CLI command: 3500-3-AX (config-wlan)# no local-admin-mac deny 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 Wireless LAN Controller (WLC) 8.10.183.0 when installed on Cisco Virtual Wireless Controller
There is a workaround that addresses this vulnerability. Administrators can disable the Random Mac Filtering feature on the affected device using the following CLI command: 3500-3-AX (config-wlan)# no local-admin-mac deny 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 Wireless LAN Controller (WLC) 8.10.185.0 when installed on Cisco Virtual Wireless Controller
There is a workaround that addresses this vulnerability. Administrators can disable the Random Mac Filtering feature on the affected device using the following CLI command: 3500-3-AX (config-wlan)# no local-admin-mac deny 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.
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