CVE-2023-2422 Information

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.

Reference

https://access.redhat.com/security/cve/CVE-2023-2422 https://access.redhat.com/errata/RHSA-2023:3892 https://bugzilla.redhat.com/show_bug.cgi?id=2191668 https://access.redhat.com/errata/RHSA-2023:3885 https://access.redhat.com/errata/RHSA-2023:3884 https://access.redhat.com/errata/RHSA-2023:3883 https://access.redhat.com/errata/RHSA-2023:3888