Access of Memory Location After End of Buffer in Cisco Firewall Threat Defense (FTD) and Cisco Adaptive Security Appliance (ASA) - CVE-2024-20402
Published: October 23, 2024
Vulnerability identifier: #VU99289
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-20402
CWE-ID: CWE-788
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 a logic error in memory management when the device is handling SSL VPN
connections. A remote attacker can send specially crafted SSL/TLS packets to the SSL VPN server of the affected device and perform a denial of service (DoS) attack.
Affected software
Cisco Firewall Threat Defense (FTD)
Cisco Adaptive Security Appliance (ASA)
Cisco Adaptive Security Appliance (ASA)
How to mitigate CVE-2024-20402
Install updates from vendor's website.
Cisco Firewall Threat Defense (FTD) - addressed in versions 7.0.6.3, 7.4.0
Cisco Adaptive Security Appliance (ASA) - addressed in versions 9.16.4.62, 9.18.4.34, 9.20.1, 9.22.1.1
Cisco Adaptive Security Appliance (ASA) - addressed in versions 9.16.4.62, 9.18.4.34, 9.20.1, 9.22.1.1