CVE-2022-4967: Strongswan

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

strongSwan versions 5.9.2 through 5.9.5 are affected by authorization bypass through improper validation of certificate with host mismatch (CWE-297). When certificates are used to authenticate clients in TLS-based EAP methods, the IKE or EAP identity supplied by a client is not enforced to be contained in the client's certificate. So clients can authenticate with any trusted certificate and claim an arbitrary IKE/EAP identity as their own. This is problematic if the identity is used to make policy decisions. A fix was released in strongSwan version 5.9.6 in August 2022 (e4b4aabc4996fc61c37deab7858d07bc4d220136).

Affected products

• Strongswan Strongswan: from 5.9.2, before 5.9.6 (fixed in 5.9.6)

Published 2024-05-14. Last modified 2026-06-17.