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Cisco IOS XE Software for Wireless LAN Controllers HTTP Client Profiling Denial of Service Vulnerability

cisco-sa-ewlc-dos-wFujBHKw · High · Published · Updated

A vulnerability in the HTTP-based client profiling feature of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of received traffic. An attacker could exploit this vulnerability by sending crafted traffic through a wireless access point. A successful exploit could allow the attacker to cause CPU utilization to increase, which could result in a DoS condition on an affected device and could cause new wireless client associations to fail. Once the offending traffic stops, the affected system will return to an operational state and new client associations will succeed. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-dos-wFujBHKw This advisory is part of the March 2023 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: March 2023 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication.

Cisco advisory · CSAF JSON

Workarounds

There are no workarounds that address this vulnerability.

As a mitigation of this vulnerability, disable the HTTP Client Profiling feature by unchecking the HTTP TLV Caching check box in all active Wireless Policy Profiles. For additional information, see the Configure Profiling on 9800 WLC ["https://www.cisco.com/c/en/us/support/docs/wireless/catalyst-9800-series-wireless-controllers/215661-in-depth-look-into-client-profiling-on-9.html#toc-hId--520732385"] section of the Demonstrate Client Profiling on 9800 Wireless LAN Controller Troubleshooting TechNote.

While this mitigation 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.

CVEsCVE-2023-20067
Cisco Bug IDsCSCwd03847
CVSS ScoreBase 7.4
Base 7.4 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X
Product Names From Source
Cisco IOS XE Software 16.10.1, Cisco IOS XE Software 16.10.1s, Cisco IOS XE Software 16.10.1e, Cisco IOS XE Software 16.11.1, Cisco IOS XE Software 16.11.1a, Cisco IOS XE Software 16.11.1b, Cisco IOS XE Software 16.11.1c, Cisco IOS XE Software 16.12.1, Cisco IOS XE Software 16.12.1s, Cisco IOS XE Software 16.12.3, Cisco IOS XE Software 16.12.8, Cisco IOS XE Software 16.12.2s, Cisco IOS XE Software 16.12.1t, Cisco IOS XE Software 16.12.2t, Cisco IOS XE Software 16.12.4, Cisco IOS XE Software 16.12.3s, Cisco IOS XE Software 16.12.4a, Cisco IOS XE Software 16.12.5, Cisco IOS XE Software 16.12.6, Cisco IOS XE Software 16.12.6a, Cisco IOS XE Software 16.12.7, Cisco IOS XE Software 17.1.1, Cisco IOS XE Software 17.1.1s, Cisco IOS XE Software 17.1.2, Cisco IOS XE Software 17.1.1t, Cisco IOS XE Software 17.1.3, Cisco IOS XE Software 17.2.1, Cisco IOS XE Software 17.2.1a, Cisco IOS XE Software 17.3.1, Cisco IOS XE Software 17.3.2, Cisco IOS XE Software 17.3.3, Cisco IOS XE Software 17.3.2a, Cisco IOS XE Software 17.3.4, Cisco IOS XE Software 17.3.5, Cisco IOS XE Software 17.3.6, Cisco IOS XE Software 17.3.4c, Cisco IOS XE Software 17.3.5a, Cisco IOS XE Software 17.3.5b, Cisco IOS XE Software 17.4.1, Cisco IOS XE Software 17.5.1, Cisco IOS XE Software 17.5.1c, Cisco IOS XE Software 17.6.1, Cisco IOS XE Software 17.6.2, Cisco IOS XE Software 17.6.3, Cisco IOS XE Software 17.6.1y, Cisco IOS XE Software 17.6.4, Cisco IOS XE Software 17.7.1, Cisco IOS XE Software 17.8.1, Cisco IOS XE Software 17.9.1, Cisco IOS XE Software

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