#VU57759 Use-after-free in Cisco Systems, Inc products - CVE-2021-40125
Published: October 28, 2021
Vulnerability identifier: #VU57759
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-40125
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
ASA 5500-X Series Firewalls
Cisco Adaptive Security Appliance (ASA)
Cisco Firewall Threat Defense (FTD)
ASA 5500-X Series Firewalls
Cisco Adaptive Security Appliance (ASA)
Cisco Firewall Threat Defense (FTD)
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error in the Internet Key Exchange Version 2 (IKEv2) implementation. A remote authenticated user can send specially crafted authenticated IKEv2 messages to the affected system, trigger a use-after-free error and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.