CVE-2023-2422 MEDIUM

CVE-2023-2422: Keycloak: oauth client impersonation

Vendor Red Hat
Product Red Hat Single Sign-On 7
Weakness CWE-295
Published October 4, 2023
Last update August 2, 2024
View on NVD All CVEs

CVSS base score

5.5/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

October 4, 2023 CVE published
August 2, 2024 Record updated