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.
References (7)
Core 7
Core References
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:3883
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:3884
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:3885
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:3888
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:3892
Vendor Advisory vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2023-2422
Issue Tracking, Vendor Advisory issue-tracking
x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2191668
Scores
CVSS v3
5.5
EPSS
0.0032
EPSS Percentile
55.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-295
Status
published
Products (7)
org.keycloak/keycloak-services
0 - 21.1.2Maven
redhat/keycloak
redhat/openshift_container_platform
4.9
redhat/openshift_container_platform
4.10
redhat/openshift_container_platform
4.11
redhat/openshift_container_platform
4.12
redhat/single_sign-on
7.6
Published
Oct 04, 2023
Tracked Since
Feb 18, 2026