{"id":"CVE-2023-2422","aliases":[],"url":"https://o3.security/vulnerability/CVE-2023-2422","summary":"Keycloak vulnerable to Improper Client Certificate Validation for OAuth/OpenID clients","details":"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.","published":"2023-06-30T20:31:37Z","modified":"2024-02-16T08:22:30.918600Z","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","fixedVersion":"21.1.2"}],"fix":{"url":"https://github.com/keycloak/keycloak/commit/5c6c55945a384bfd82e51283096204dcb6f63d91","label":"keycloak/keycloak@5c6c559"},"references":[{"type":"WEB","url":"https://github.com/keycloak/keycloak/security/advisories/GHSA-3qh5-qqj2-c78f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-2422"},{"type":"WEB","url":"https://github.com/keycloak/keycloak/commit/5c6c55945a384bfd82e51283096204dcb6f63d91"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2023:3883"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2023:3884"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2023:3885"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2023:3888"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2023:3892"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2023-2422"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2191668"},{"type":"PACKAGE","url":"https://github.com/keycloak/keycloak"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2024-02-16T08:22:30.918600Z"}}