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

Synopsis:          Moderate: Red Hat JBoss Web Server 5.4 security release
Advisory ID:       RHSA-2020:5173-01
Product:           Red Hat JBoss Web Server
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:5173
Issue date:        2020-11-23
CVE Names:         CVE-2020-11996
====================================================================
1. Summary:

Red Hat JBoss Web Server 5.4.0 zip release for RHEL 6, RHEL 7, RHEL 8 and
Microsoft Windows is available.

Red Hat Product Security has rated this release as having a security impact
of Moderate. 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 5.4 serves as a replacement for
Red Hat JBoss Web Server 5.3, and includes bug fixes, enhancements, and
component upgrades, which are documented in the Release Notes, linked to in
the References.

Security Fix(es):

* tomcat: specially crafted sequence of HTTP/2 requests can lead to DoS
(CVE-2020-11996)

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/):

1851420 - CVE-2020-11996 tomcat: specially crafted sequence of HTTP/2 requests can lead to DoS

5. References:

https://access.redhat.com/security/cve/CVE-2020-11996
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=webserver&downloadType=distributions&version=5.4
https://access.redhat.com/documentation/en-US/Red_Hat_JBoss_Web_Server/5.4

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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