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.
Remediation
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
Related Vulnerabilities
CVE-2018-1000665 Vulnerability in maven package org.webjars:dojo
CVE-2019-10287 Vulnerability in maven package org.jenkins-ci.plugins:youtrack-plugin
CVE-2017-7677 Vulnerability in maven package org.apache.ranger:ranger
CVE-2020-27217 Vulnerability in maven package org.eclipse.hono:hono-bom
CVE-2019-12418 Vulnerability in maven package org.apache.tomcat:tomcat-catalina-jmx-remote