GoogleOSV:GHSA-3QH5-QQJ2-C78FKeycloak vulnerable to Improper Client Certificate Validation for OAuth/OpenID clients
0.001 Low
EPSS
Percentile
36.1%
When a Keycloak server is configured to support mTLS authentication for OAuth/OpenID clients, it does not properly verify the client certificate chain. A client that possesses a proper certificate can authorize itself as any other client and therefore access data that belongs to other clients.
References
access.redhat.com/errata/RHSA-2023:3883
access.redhat.com/errata/RHSA-2023:3884
access.redhat.com/errata/RHSA-2023:3885
access.redhat.com/errata/RHSA-2023:3888
access.redhat.com/errata/RHSA-2023:3892
access.redhat.com/security/cve/CVE-2023-2422
bugzilla.redhat.com/show_bug.cgi?id=2191668
github.com/keycloak/keycloak
github.com/keycloak/keycloak/commit/5c6c55945a384bfd82e51283096204dcb6f63d91
github.com/keycloak/keycloak/security/advisories/GHSA-3qh5-qqj2-c78f
nvd.nist.gov/vuln/detail/CVE-2023-2422
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