Buffer overflow in Cisco ASR 5000 Series - CVE-2021-1424
Published: March 4, 2021
Vulnerability identifier: #VU51222
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-1424
CWE-ID: CWE-119
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 validation of incoming Internet Key Exchange Version 2 (IKEv2) packets. A remote attacker can send specially crafted IKEv2 packets, trigger memory corruption and cause a denial of service condition on the target system.
Affected software
Cisco ASR 5000 Series
How to mitigate CVE-2021-1424
Install updates from vendor's website.
Cisco ASR 5000 Series - update to 21.22