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Red Hat Security Advisory 2013-1134-01

Red Hat Security Advisory 2013-1134-01
Posted Aug 5, 2013
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2013-1134-01 - 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 HTTP Server, the Apache Tomcat Servlet container, Apache Tomcat Connector, JBoss HTTP Connector, Hibernate, and the Tomcat Native library. A flaw was found in the way the mod_dav module of the Apache HTTP Server handled merge requests. An attacker could use this flaw to send a crafted merge request that contains URIs that are not configured for DAV, causing the httpd child process to crash.

tags | advisory, java, web
systems | linux, redhat
advisories | CVE-2013-1862, CVE-2013-1896
SHA-256 | f3762866ae287745c1aef81e5fd72ea6d719231d8bf28f0fc66d89f34941946c

Red Hat Security Advisory 2013-1134-01

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

Synopsis: Moderate: httpd security update
Advisory ID: RHSA-2013:1134-01
Product: Red Hat JBoss Web Server
Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-1134.html
Issue date: 2013-08-05
CVE Names: CVE-2013-1862 CVE-2013-1896
=====================================================================

1. Summary:

An update for the Apache HTTP Server component of Red Hat JBoss Web Server
2.0.1 that fixes two security issues is now available from the Red Hat
Customer Portal for Red Hat Enterprise Linux 5 and 6, Solaris, and
Microsoft Windows.

The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links 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
HTTP Server, the Apache Tomcat Servlet container, Apache Tomcat Connector
(mod_jk), JBoss HTTP Connector (mod_cluster), Hibernate, and the Tomcat
Native library.

A flaw was found in the way the mod_dav module of the Apache HTTP Server
handled merge requests. An attacker could use this flaw to send a crafted
merge request that contains URIs that are not configured for DAV, causing
the httpd child process to crash. (CVE-2013-1896)

It was found that mod_rewrite did not filter terminal escape sequences from
its log file. If mod_rewrite was configured with the RewriteLog directive,
a remote attacker could use specially-crafted HTTP requests to inject
terminal escape sequences into the mod_rewrite log file. If a victim viewed
the log file with a terminal emulator, it could result in arbitrary command
execution with the privileges of that user. (CVE-2013-1862)

Note: CVE-2013-1862 affects mod_rewrite. In the process of testing this
patch, it was found that enabling mod_rewrite on 64-bit versions of Windows
Server 2008 and Windows Server 2008 R2 running Red Hat JBoss Web Server
2.0.1 could cause an httpd thread to crash, and the httpd process to
restart. This bug is present in the GA release of Red Hat JBoss Web Server
2.0.1, and is not a regression introduced by this patch. This bug may be
resolved in a future update to JBoss Web Server 2.

Warning: Before applying the update, back up your existing Red Hat JBoss
Web Server installation (including all applications and configuration
files).

All users of Red Hat JBoss Web Server 2.0.1 as provided from the Red Hat
Customer Portal are advised to apply this update.

3. Solution:

The References section of this erratum contains a download link (you must
log in to download the update). Before applying the update, back up your
existing Red Hat JBoss Web Server installation (including all applications
and configuration files).

The Apache HTTP Server must be restarted for this update to take effect.

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

953729 - CVE-2013-1862 httpd: mod_rewrite allows terminal escape sequences to be written to the log file
983549 - CVE-2013-1896 httpd: mod_dav DoS (httpd child process crash) via a URI MERGE request with source URI not handled by mod_dav

5. References:

https://www.redhat.com/security/data/cve/CVE-2013-1862.html
https://www.redhat.com/security/data/cve/CVE-2013-1896.html
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=webserver&downloadType=securityPatches&version=2.0.1

6. Contact:

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

Copyright 2013 Red Hat, Inc.
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