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

Synopsis:          Important: Red Hat Single Sign-On 7.5.1 security update
Advisory ID:       RHSA-2022:0407-01
Product:           Red Hat Single Sign-On
Advisory URL:      https://access.redhat.com/errata/RHSA-2022:0407
Issue date:        2022-02-02
CVE Names:         CVE-2021-3859
====================================================================
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 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 7.5 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 7.5.1 serves as a replacement for
Red Hat Single Sign-On 7.5.0, and includes bug fixes and enhancements,
which are documented in the Release Notes document linked to in the
References.

Security Fix(es):

* undertow: client side invocation timeout raised when calling over HTTP
and HTTP2 (CVE-2021-3859)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, 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/):

2010378 - CVE-2021-3859 undertow: client side invocation timeout raised when calling over HTTP2

5. JIRA issues fixed (https://issues.jboss.org/):

CIAM-1974 - [CVE-2021-3859 (undertow)] One-off patch for RH-SSO 7.5.1 ZIP distribution

6. References:

https://access.redhat.com/security/cve/CVE-2021-3859
https://access.redhat.com/security/updates/classification/#important

7. 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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