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

Synopsis:          Important: Red Hat Single Sign-On 7.6.5 security update on RHEL 7
Advisory ID:       RHSA-2023:4918-01
Product:           Red Hat Single Sign-On
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:4918
Issue date:        2023-08-31
CVE Names:         CVE-2021-46877 CVE-2023-1436 CVE-2023-3223 
=====================================================================

1. Summary:

New Red Hat Single Sign-On 7.6.5 packages are now available for Red Hat
Enterprise Linux 7.

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. Relevant releases/architectures:

Red Hat Single Sign-On 7.6 for RHEL 7 Server - noarch

3. 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 on RHEL 7 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):

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

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

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

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.

4. 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

5. 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

6. Package List:

Red Hat Single Sign-On 7.6 for RHEL 7 Server:

Source:
rh-sso7-keycloak-18.0.9-1.redhat_00001.1.el7sso.src.rpm

noarch:
rh-sso7-keycloak-18.0.9-1.redhat_00001.1.el7sso.noarch.rpm
rh-sso7-keycloak-server-18.0.9-1.redhat_00001.1.el7sso.noarch.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. 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

8. 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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