SB2023090728 - Authentication bypass using an alternate path or channel in Cisco Adaptive Security Appliance and Firepower Threat Defense
Published: September 7, 2023 Updated: September 8, 2023
Security Bulletin ID
SB2023090728
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Authentication bypass using an alternate path or channel (CVE-ID: CVE-2023-20269)
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to improper separation of authentication, authorization, and accounting (AAA) between the remote access VPN feature and the HTTPS management and site-to-site VPN features. A remote user can perform a brute-force attack and establish a clientless SSL VPN session with an unauthorized user.
Note, the vulnerability is being actively exploited in the wild.
Remediation
Install update from vendor's website.