(RHSA-2023:7856) Important: Red Hat Single Sign-On 7.6.6 security update on RHEL 8

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 on RHEL 8 serves as a replacement for Red Hat Single Sign-On 7.6.5, and includes bug fixes and enhancements.

Security Fix(es):

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