AusCERT - ESB-2012.0239 - [RedHat] jbossweb: Denial of service

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ESB-2012.0239 - [RedHat] jbossweb: Denial of service - Remote/unauthenticated
Date: 02 March 2012
References: ESB-2012.0067 ESB-2012.0102 ESB-2012.0103 ESB-2012.0216 ESB-2012.0365 ESB-2012.0488

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.0239
              Moderate: jbossweb security and bug fix update
                               2 March 2012

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           jbossweb
Publisher:         Red Hat
Operating System:  Red Hat
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2012-0022  

Reference:         ESB-2012.0216
                   ESB-2012.0103
                   ESB-2012.0102
                   ESB-2012.0067

Original Bulletin: 
   https://rhn.redhat.com/errata/RHSA-2012-0345.html

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                   Red Hat Security Advisory

Synopsis:          Moderate: jbossweb security and bug fix update
Advisory ID:       RHSA-2012:0345-02
Product:           JBoss Enterprise Middleware
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-0345.html
Issue date:        2012-03-01
CVE Names:         CVE-2012-0022 
=====================================================================

1. Summary:

An update for JBoss Enterprise Portal Platform 4.3 CP07 that fixes one
security issue and one bug is now available from the Red Hat Customer
Portal.

The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

2. Description:

JBoss Enterprise Portal Platform is the open source implementation of the
Java EE suite of services and Portal services running atop JBoss Enterprise
Application Platform. It comprises a set of offerings for enterprise
customers who are looking for pre-configured profiles of JBoss Enterprise
Middleware components that have been tested and certified together to
provide an integrated experience.

It was found that JBoss Web did not handle large numbers of parameters and
large parameter values efficiently. A remote attacker could make JBoss Web
use an excessive amount of CPU time by sending an HTTP request containing a
large number of parameters or large parameter values. This update
introduces limits on the number of parameters and headers processed per
request to address this issue. The default limit is 512 for parameters
and 128 for headers. These defaults can be changed by setting the
org.apache.tomcat.util.http.Parameters.MAX_COUNT and
org.apache.tomcat.util.http.MimeHeaders.MAX_COUNT system properties in
"jboss-as/server/[PROFILE]/deploy/properties-service.xml". (CVE-2012-0022)

This update also fixes a bug that occurred when using certain forms with a
custom encoding. (BZ#794470)

Warning: Before applying this update, back up all applications deployed on
JBoss Enterprise Portal Platform, along with all customized configuration
files.

All users of JBoss Enterprise Portal Platform 4.3 CP07 as provided from the
Red Hat Customer Portal are advised to install this update.

3. Solution:

The References section of this erratum contains a download link (you must
log in to download the update).

The JBoss server process must be restarted for this update to take effect.

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

783359 - CVE-2012-0022 tomcat: large number of parameters DoS

5. References:

https://www.redhat.com/security/data/cve/CVE-2012-0022.html
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=jbportal&downloadType=securityPatches&version=4.3+CP07

6. Contact:

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

Copyright 2012 Red Hat, Inc.
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