cisco-sa-fmc-cacauthbyp-NCLGZm3Q: Cisco Firepower Management Center Software Common Access Card Authentication Bypass Vulnerability

First published: Wed Oct 21 2020(Updated: )

A vulnerability in the Common Access Card (CAC) authentication feature of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and access the FMC system. The attacker must have a valid CAC to initiate the access attempt. The vulnerability is due to incorrect session invalidation during CAC authentication. An attacker could exploit this vulnerability by performing a CAC-based authentication attempt to an affected system. A successful exploit could allow the attacker to access an affected system with the privileges of a CAC-authenticated user who is currently logged in. 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-fmc-cacauthbyp-NCLGZm3Q 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.

Credit: This vulnerability was found by John Maroney during the resolution a Cisco TAC support case

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

• agent/type
• agent/softwarecombine
• agent/first-publish-date
• agent/last-modified-date
• collector/cisco-advisory
• source/Cisco
• agent/software-canonical-lookup
• agent/author
• agent/weakness
• agent/references
• agent/severity
• agent/title
• agent/tags
• agent/description
• agent/event
• vendor/cisco
• canonical/cisco fmc software