CVE-2023-2422CWE-295

Keycloak: oauth client impersonation

Medium · published October 4, 2023

CVSS v3.1
5.5
EPSS
1%
Percentile
43.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00522 · 43.5th percentile
Weakness
CWE-295 · Improper Certificate Validation
Published
2023-10-04T10:59Z
EPSS history
Timeline
  • 04 OCT 10:59Z
    Keycloak: oauth client impersonation
    cvelistv5