(RHSA-2023:3892) Important: Red Hat Single Sign-On 7.6.4 security update

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 7.6.4 serves as a replacement for Red Hat Single Sign-On 7.6.3, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References.

Security Fix(es):

• keycloak: Cross-site scripting when validating URI-schemes on SAML and OIDC (CVE-2022-4361)

• keycloak: oauth client impersonation (CVE-2023-2422)

• keycloak: Untrusted Certificate Validation (CVE-2023-1664)

• undertow: Infinite loop in SslConduit during close (CVE-2023-1108)

• keycloak: client access via device auth request spoof (CVE-2023-2585)

• xstream: Arbitrary code execution via unsafe deserialization of sun.tracing.* (CVE-2021-39144)

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.