CVE-2023-2422

high

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

https://bugzilla.redhat.com/show_bug.cgi?id=2191668

https://access.redhat.com/security/cve/CVE-2023-2422

https://access.redhat.com/errata/RHSA-2023:3892

https://access.redhat.com/errata/RHSA-2023:3888

https://access.redhat.com/errata/RHSA-2023:3885

https://access.redhat.com/errata/RHSA-2023:3884

https://access.redhat.com/errata/RHSA-2023:3883

Details

Source: Mitre, NVD

Published: 2023-10-04

Updated: 2023-11-07

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:P/A:N

Severity: High

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Severity: High