#VU80521 Authentication bypass using an alternate path or channel in Cisco Adaptive Security Appliance (ASA) and Cisco Firewall Threat Defense (FTD) - CVE-2023-20269
Published: September 7, 2023 / Updated: September 8, 2023
Vulnerability identifier: #VU80521
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:A/U:Amber
CVE-ID: CVE-2023-20269
CWE-ID: CWE-288
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerable software:
Cisco Adaptive Security Appliance (ASA)
Cisco Firewall Threat Defense (FTD)
Cisco Adaptive Security Appliance (ASA)
Cisco Firewall Threat Defense (FTD)
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
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 updates from vendor's website.