Red Hat Product Errata RHSA-2023:7858 - Security Advisory
Issued:
2023-12-14
Updated:
2023-12-14

RHSA-2023:7858 - Security Advisory

Synopsis

Important: Red Hat Single Sign-On 7.6.6 security update

Type/Severity

Security Advisory: Important

Topic

A security update is now available for Red Hat Single Sign-On 7.6 from the Customer Portal.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Red Hat Single Sign-On 7.6 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications.

This release of Red Hat Single Sign-On 7.6.6 serves as a replacement for Red Hat Single Sign-On 7.6.5, and includes bug fixes and enhancements.

Security Fix(es):

  • keycloak: redirect_uri validation logic that allows for a bypass of otherwise explicitly allowed hosts (CVE-2023-6134)
  • keycloak: reflected XSS via wildcard in OIDC redirect_uri (CVE-2023-6291)
  • keycloak: offline session token DoS (CVE-2023-6563)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Solution

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).

Affected Products

  • Red Hat Single Sign-On Text-Only Advisories x86_64

Fixes

  • BZ - 2249673 - CVE-2023-6134 keycloak: reflected XSS via wildcard in OIDC redirect_uri
  • BZ - 2251407 - CVE-2023-6291 keycloak: redirect_uri validation logic that allows for a bypass of otherwise explicitly allowed hosts
  • BZ - 2253308 - CVE-2023-6563 keycloak: offline session token DoS

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.