Use of insufficiently random values in Cisco Firewall Threat Defense (FTD) and Cisco Adaptive Security Appliance (ASA) - CVE-2024-20331
Published: October 24, 2024
Vulnerability identifier: #VU99293
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-20331
CWE-ID: CWE-330
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient entropy in the authentication process in the session authentication functionality of the Remote Access SSL VPN feature. A remote attacker can determining the handle of an authenticating user and use it to terminate their authentication session, resulting in a denial of service condition.
Affected software
Cisco Firewall Threat Defense (FTD)
Cisco Adaptive Security Appliance (ASA)
Cisco Adaptive Security Appliance (ASA)
How to mitigate CVE-2024-20331
Install updates from vendor's website.
Cisco Firewall Threat Defense (FTD) - addressed in versions 6.4.0.18, 7.0.6.2, 7.2.6, 7.4.2
Cisco Adaptive Security Appliance (ASA) - addressed in versions 9.12.4.67, 9.16.4.55, 9.17.1.39, 9.18.4.22, 9.19.1.28, 9.20.2.10, 9.22.1.1
Cisco Adaptive Security Appliance (ASA) - addressed in versions 9.12.4.67, 9.16.4.55, 9.17.1.39, 9.18.4.22, 9.19.1.28, 9.20.2.10, 9.22.1.1