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

Synopsis:          Low: Red Hat Single Sign-On 7.5.2 security update
Advisory ID:       RHSA-2022:1469-01
Product:           Red Hat Single Sign-On
Advisory URL:      https://access.redhat.com/errata/RHSA-2022:1469
Issue date:        2022-04-20
CVE Names:         CVE-2021-45105
====================================================================
1. Summary:

A security update is now available for Red Hat Single Sign-On 7.5 from the
Customer Portal.

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. 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 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.

3. Solution:

Before applying the update, back up your existing installation, including
all applications, configuration files, databases and database settings, and
so on.

The References section of this erratum contains a download link (you must
log in to download the update).

4. 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

5. References:

https://access.redhat.com/security/cve/CVE-2021-45105
https://access.redhat.com/security/updates/classification/#low
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.rhsso&downloadType=patches&version=7.5
https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.5/html/release_notes/index

6. 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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