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Red Hat Security Advisory

Synopsis:          Low: Red Hat Single Sign-On 7.5.2 security update on RHEL 7
Advisory ID:       RHSA-2022:1462-01
Product:           Red Hat Single Sign-On
Advisory URL:      https://access.redhat.com/errata/RHSA-2022:1462
Issue date:        2022-04-20
CVE Names:         CVE-2021-45105
====================================================================
1. Summary:

New Red Hat Single Sign-On 7.5.2 packages are now available for Red Hat
Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Low. 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 7.5 for RHEL 7 Server - noarch

3. Description:

Red Hat Single Sign-On 7.5 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 7.5.2 on RHEL 7 serves as a
replacement for Red Hat Single Sign-On 7.5.1, and includes bug fixes and
enhancements, which are documented in the Release Notes document linked to
in the References.

Security Fix(es):

* log4j-core: DoS in log4j 2.x with Thread Context Map (MDC) input data
contains a recursive lookup and context lookup pattern (CVE-2021-45105)

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/):

2034067 - CVE-2021-45105 log4j-core: DoS in log4j 2.x with Thread Context Map (MDC) input data contains a recursive lookup and context lookup pattern

6. Package List:

Red Hat Single Sign-On 7.5 for RHEL 7 Server:

Source:
rh-sso7-keycloak-15.0.6-1.redhat_00001.1.el7sso.src.rpm

noarch:
rh-sso7-keycloak-15.0.6-1.redhat_00001.1.el7sso.noarch.rpm
rh-sso7-keycloak-server-15.0.6-1.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-2021-45105
https://access.redhat.com/security/updates/classification/#low
https://access.redhat.com/articles/11258

8. Contact:

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

Copyright 2022 Red Hat, Inc.
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