Description
A flaw was found in Keycloak. A Keycloak server configured to support mTLS authentication for OAuth/OpenID clients does not properly verify the client certificate chain. A client that possesses a proper certificate can authorize itself as any other client, therefore, access data that belongs to other clients.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Red Hat Red Hat Single Sign-On 7
Default version status: unaffected
Red Hat Red Hat Single Sign-On 7.6 for RHEL 7
Default version status: affected
0:18.0.8-1.redhat_00001.1.el7sso to < *unaffected
Red Hat Red Hat Single Sign-On 7.6 for RHEL 8
Default version status: affected
0:18.0.8-1.redhat_00001.1.el8sso to < *unaffected
Red Hat Red Hat Single Sign-On 7.6 for RHEL 9
Default version status: affected
0:18.0.8-1.redhat_00001.1.el9sso to < *unaffected
Red Hat RHEL-8 based Middleware Containers
Default version status: affected
7.6-24 to < *unaffected
References
- https://access.redhat.com/errata/RHSA-2023:3883 ↗
- https://access.redhat.com/errata/RHSA-2023:3884 ↗
- https://access.redhat.com/errata/RHSA-2023:3885 ↗
- https://access.redhat.com/errata/RHSA-2023:3888 ↗
- https://access.redhat.com/errata/RHSA-2023:3892 ↗
- https://access.redhat.com/security/cve/CVE-2023-2422 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2191668 ↗