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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: Red Hat Single Sign-On 7.6.5 security update
Advisory ID:       RHSA-2023:4924-01
Product:           Red Hat Single Sign-On
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:4924
Issue date:        2023-08-31
CVE Names:         CVE-2021-46877 CVE-2023-1436 CVE-2023-3223 
=====================================================================

1. Summary:

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.

2. 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 7.6.5 serves as a replacement for
Red Hat Single Sign-On 7.6.4, and includes bug fixes and enhancements,
which are documented in the Release Notes document linked to in the
References.

Security Fix(es):

* undertow: OutOfMemoryError due to @MultipartConfig handling
(CVE-2023-3223)

* jackson-databind: Possible DoS if using JDK serialization to serialize
JsonNode (CVE-2021-46877)

* jettison: Uncontrolled Recursion in JSONArray (CVE-2023-1436)

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.

3. 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

4. Bugs fixed (https://bugzilla.redhat.com/):

2182788 - CVE-2023-1436 jettison: Uncontrolled Recursion in JSONArray
2185707 - CVE-2021-46877 jackson-databind: Possible DoS if using JDK serialization to serialize JsonNode
2209689 - CVE-2023-3223 undertow: OutOfMemoryError due to @MultipartConfig handling

5. References:

https://access.redhat.com/security/cve/CVE-2021-46877
https://access.redhat.com/security/cve/CVE-2023-1436
https://access.redhat.com/security/cve/CVE-2023-3223
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.rhsso&downloadType=securityPatches&version=7.6

6. Contact:

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

Copyright 2023 Red Hat, Inc.
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