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

Synopsis:          Moderate: tomcat7 security update
Advisory ID:       RHSA-2013:0268-01
Product:           JBoss Enterprise Web Server
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2013-0268.html
Issue date:        2013-02-19
CVE Names:         CVE-2012-4431 
=====================================================================

1. Summary:

Updated tomcat7 packages that fix one security issue are now available for
JBoss Enterprise Web Server 2.0.0 for Red Hat Enterprise Linux 5 and 6.

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. Relevant releases/architectures:

JBoss Enterprise Web Server 2 for RHEL 5 Server - noarch
JBoss Enterprise Web Server 2 for RHEL 6 Server - noarch

3. Description:

Apache Tomcat is a servlet container.

It was found that sending a request without a session identifier to a
protected resource could bypass the Cross-Site Request Forgery (CSRF)
prevention filter. A remote attacker could use this flaw to perform
CSRF attacks against applications that rely on the CSRF prevention filter
and do not contain internal mitigation for CSRF. (CVE-2012-4431)

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

Users of Tomcat should upgrade to these updated packages, which resolve
this issue. Tomcat must be restarted for this update to take effect.

4. Solution:

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

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

883636 - CVE-2012-4431 Tomcat/JBoss Web - Bypass of CSRF prevention filter

6. Package List:

JBoss Enterprise Web Server 2 for RHEL 5 Server:

Source:
tomcat7-7.0.30-3_patch_02.ep6.el5.src.rpm

noarch:
tomcat7-7.0.30-3_patch_02.ep6.el5.noarch.rpm
tomcat7-admin-webapps-7.0.30-3_patch_02.ep6.el5.noarch.rpm
tomcat7-docs-webapp-7.0.30-3_patch_02.ep6.el5.noarch.rpm
tomcat7-el-1.0-api-7.0.30-3_patch_02.ep6.el5.noarch.rpm
tomcat7-javadoc-7.0.30-3_patch_02.ep6.el5.noarch.rpm
tomcat7-jsp-2.2-api-7.0.30-3_patch_02.ep6.el5.noarch.rpm
tomcat7-lib-7.0.30-3_patch_02.ep6.el5.noarch.rpm
tomcat7-log4j-7.0.30-3_patch_02.ep6.el5.noarch.rpm
tomcat7-servlet-3.0-api-7.0.30-3_patch_02.ep6.el5.noarch.rpm
tomcat7-webapps-7.0.30-3_patch_02.ep6.el5.noarch.rpm

JBoss Enterprise Web Server 2 for RHEL 6 Server:

Source:
tomcat7-7.0.30-5_patch_02.ep6.el6.src.rpm

noarch:
tomcat7-7.0.30-5_patch_02.ep6.el6.noarch.rpm
tomcat7-admin-webapps-7.0.30-5_patch_02.ep6.el6.noarch.rpm
tomcat7-docs-webapp-7.0.30-5_patch_02.ep6.el6.noarch.rpm
tomcat7-el-1.0-api-7.0.30-5_patch_02.ep6.el6.noarch.rpm
tomcat7-javadoc-7.0.30-5_patch_02.ep6.el6.noarch.rpm
tomcat7-jsp-2.2-api-7.0.30-5_patch_02.ep6.el6.noarch.rpm
tomcat7-lib-7.0.30-5_patch_02.ep6.el6.noarch.rpm
tomcat7-log4j-7.0.30-5_patch_02.ep6.el6.noarch.rpm
tomcat7-servlet-3.0-api-7.0.30-5_patch_02.ep6.el6.noarch.rpm
tomcat7-webapps-7.0.30-5_patch_02.ep6.el6.noarch.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2012-4431.html
https://access.redhat.com/security/updates/classification/#moderate
http://tomcat.apache.org/security-7.html

8. 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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