RHSA-2023:7858HighCVSS 7.7

Red Hat Security Advisory: Red Hat Single Sign-On 7.6.6 security update

Published
December 14, 2023
Last Modified
August 4, 2026

🔗 CVE IDs covered (3)

CVE-2023-6291 →CVE-2023-6563 →CVE-2023-6134 →

📋 Description

CVE-2023-6134 — keycloak: reflected XSS via wildcard in OIDC redirect_uri CVE-2023-6291 — keycloak: redirect_uri validation bypass CVE-2023-6563 — keycloak: offline session token DoS

🎯 Affected products1

  • Single Sign-On 7.6.6

✅ Remediation

Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on. The References section of this erratum contains a download link (you must log in to download the update). Workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Workaround: There are three main options to prevent exploitation: 1) If you are using a reverse proxy, block the consents URL. 2) This option is less effective: remove the consents application tab from the account console theme. 3) This option has a significant negative impact on end users: entirely disable offline user profiles.

🔗 References (7)