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

Synopsis:          Important: Red Hat JBoss Web Server 5.3.1 security update
Advisory ID:       RHSA-2020:2509-01
Product:           Red Hat JBoss Web Server
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:2509
Issue date:        2020-06-10
CVE Names:         CVE-2020-9484 
=====================================================================

1. Summary:

Updated Red Hat JBoss Web Server 5.3.1 packages are now available for Red
Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise
Linux 8 and Windows.

Red Hat Product Security has rated this release 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 JBoss Web Server is a fully integrated and certified set of
components for hosting Java web applications. It is comprised of the Apache
Tomcat Servlet container, JBoss HTTP Connector (mod_cluster), the
PicketLink Vault extension for Apache Tomcat, and the Tomcat Native
library.

This release of Red Hat JBoss Web Server 5.3.1 serves as a replacement for
Red Hat JBoss Web Server 5.3.0, and includes bug fixes, enhancements, and
component upgrades, which are documented in the Release Notes, linked to in
the References.

Security Fix(es):

* tomcat: Apache Tomcat Remote Code Execution via session persistence
(CVE-2020-9484)

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 for the
update. You must be logged in to download the update.

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

1838332 - CVE-2020-9484 tomcat: deserialization flaw in session persistence
 storage leading to RCE

5. References:

https://access.redhat.com/security/cve/CVE-2020-9484
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=webserver&downloadType=securityPatches&version=5.3
https://access.redhat.com/documentation/en-us/red_hat_jboss_web_server/5.3/

6. Contact:

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

Copyright 2020 Red Hat, Inc.
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