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Category:   Application (Web Server/CGI)  >   Red Hat JBoss Vendors:   Red Hat
(Red Hat Issues Fix for JBoss Web Server) Apache Tomcat Request Processing Lets Remote Users Deny Service
SecurityTracker Alert ID:  1034444
SecurityTracker URL:
CVE Reference:   CVE-2014-0230   (Links to External Site)
Date:  Dec 16 2015
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Apache Tomcat. A remote user can cause denial of service conditions on the target system. JBoss Web Server is affected.

A remote user can send a specially crafted request to temporarily consume excessive CPU resources on the target system.

AntBean@secdig from the Baidu Security Team reported this vulnerability.

Impact:   A remote user can consume excessive memory on the target system.
Solution:   Red Hat has issued a fix for JBoss Web Server.

The Red Hat advisories are available at:

Vendor URL: (Links to External Site)
Cause:   Resource error
Underlying OS:  Linux (Red Hat Enterprise), UNIX (Solaris - SunOS), Windows (Any)

Message History:   This archive entry is a follow-up to the message listed below.
Apr 11 2015 Apache Tomcat Request Processing Lets Remote Users Deny Service

 Source Message Contents

Subject:  [RHSA-2015:2661-01] Moderate: Red Hat JBoss Web Server 3.0.2 security update

Hash: SHA1

                   Red Hat Security Advisory

Synopsis:          Moderate: Red Hat JBoss Web Server 3.0.2 security update
Advisory ID:       RHSA-2015:2661-01
Product:           Red Hat JBoss Web Server
Advisory URL:
Issue date:        2015-12-16
CVE Names:         CVE-2013-5704 CVE-2014-0230 CVE-2015-3183 

1. Summary:

Updated Red Hat JBoss Web Server 3.0.2 packages are now available for Red
Hat Enterprise Linux 6 and 7, Solaris, and Microsoft Windows.

Red Hat Product Security 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.

It was found that Tomcat would keep connections open after processing
requests with a large enough request body. A remote attacker could
potentially use this flaw to exhaust the pool of available connections
and prevent further, legitimate connections to the Tomcat server.

A flaw was found in the way httpd handled HTTP Trailer headers when
processing requests using chunked encoding. A malicious client could
use Trailer headers to set additional HTTP headers after header
processing was performed by other modules. This could, for example,
lead to a bypass of header restrictions defined with mod_headers.

Multiple flaws were found in the way httpd parsed HTTP requests and
responses using chunked transfer encoding. A remote attacker could
use these flaws to create a specially crafted request, which httpd
would decode differently from an HTTP proxy software in front of it,
possibly leading to HTTP request smuggling attacks. (CVE-2015-3183)

* This enhancement update adds the Red Hat JBoss Web Server 3.0.2
packages to Red Hat Enterprise Linux 7. These packages provide a
number of enhancements over the previous version of Red Hat JBoss Web
Server. (JIRA#JWS-229)

Users of Red Hat JBoss Web Server are advised to upgrade to these
updated packages, which add this enhancement.

3. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied and back up your existing
Red Hat JBoss Web Server installation (including all applications and
configuration files).

For details on how to apply this update, refer to:

4. Bugs fixed (

1082903 - CVE-2013-5704 httpd: bypass of mod_headers rules via chunked requests
1191200 - CVE-2014-0230 tomcat: non-persistent DoS attack by feeding data by aborting an upload
1243887 - CVE-2015-3183 httpd: HTTP request smuggling attack against chunked request parser
1263884 - JWS3.0.2 tracker for RHEL7

5. JIRA issues fixed (

JWS-219 - CVE-2014-0230 tomcat8: non-persistent DoS attack by feeding data by aborting an upload
JWS-220 - CVE-2014-0230 tomcat7: non-persistent DoS attack by feeding data by aborting an upload
JWS-229 - RHEL 7 Errata Jira

6. References:

7. Contact:

The Red Hat security contact is <>. More contact
details at

Copyright 2015 Red Hat, Inc.
Version: GnuPG v1


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