RHSA-2023:3884 - Security Advisory

Topic

New Red Hat Single Sign-On 7.6.4 packages are now available for Red Hat Enterprise Linux 8.

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 7.6.4 on RHEL 8 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)
• undertow: Infinite loop in SslConduit during close (CVE-2023-1108)
• keycloak: oauth client impersonation (CVE-2023-2422)
• keycloak: Untrusted Certificate Validation (CVE-2023-1664)
• keycloak: client access via device auth request spoof (CVE-2023-2585)

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 this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Single Sign-On 7.6 for RHEL 8 x86_64

Fixes

• BZ - 2151618 - CVE-2022-4361 Keycloak | RHSSO: XSS due to lax URI scheme validation
• BZ - 2174246 - CVE-2023-1108 Undertow: Infinite loop in SslConduit during close
• BZ - 2182196 - CVE-2023-1664 keycloak: Untrusted Certificate Validation
• BZ - 2191668 - CVE-2023-2422 keycloak: oauth client impersonation
• BZ - 2196335 - CVE-2023-2585 keycloak: client access via device auth request spoof

CVEs

• CVE-2022-4361
• CVE-2023-1108
• CVE-2023-1664
• CVE-2023-2422
• CVE-2023-2585

References

• https://access.redhat.com/security/updates/classification/#important
• https://access.redhat.com/articles/11258