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

                           CERT-Renater

               Note d'Information No. 2013/VULN015
_____________________________________________________________________

DATE                : 10/01/2013

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S) :Systems running
               JBoss Enterprise Application Platform version 4.3.0 CP10.

======================================================================
https://rhn.redhat.com/errata/RHSA-2013-0146.html
______________________________________________________________________

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

Synopsis:          Important: jbossweb security update
Advisory ID:       RHSA-2013:0146-01
Product:           JBoss Enterprise Application Platform
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2013-0146.html
Issue date:        2013-01-08
CVE Names:         CVE-2012-3546
=====================================================================

1. Summary:

An update for JBoss Enterprise Application Platform 4.3.0 CP10 that
fixes one security issue is now available from the Red Hat Customer Portal.

The Red Hat Security Response Team has rated this update as having
important 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 Web is the web container, based on Apache Tomcat, in JBoss
Enterprise Application Platform. It provides a single deployment
platform for the JavaServer Pages (JSP) and Java Servlet technologies.

It was found that when an application used FORM authentication, along
with another component that calls request.setUserPrincipal() before the
call to FormAuthenticator#authenticate() (such as the Single-Sign-On
valve), it was possible to bypass the security constraint checks in the
FORM authenticator by appending "/j_security_check" to the end of a
URL. A remote attacker with an authenticated session on an affected
application could use this flaw to circumvent authorization controls,
and thereby access resources not permitted by the roles associated with
their authenticated session.
(CVE-2012-3546)

Warning: Before applying this update, back up your JBoss Enterprise
Application Platform's "jboss-as/server/[PROFILE]/deploy/" directory,
along with all other customized configuration files.

All users of JBoss Enterprise Application Platform 4.3.0 CP10 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). Before applying the update, back
up your existing JBoss Enterprise Application Platform installation
(including all applications and configuration files).

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

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

883634 - CVE-2012-3546 Tomcat/JBoss Web: Bypass of security constraints

5. References:

https://www.redhat.com/security/data/cve/CVE-2012-3546.html
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=appplatform&downloadType=securityPatches&version=4.3.0.GA_CP10
http://tomcat.apache.org/security-6.html

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.

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

                 =========================================================
Serveur de référence du CERT-Renater
https://services.renater.fr/ssi/
=========================================================
+ CERT-RENATER          | tel : 01-53-94-20-44          +
+ 23 - 25 Rue Daviel    | fax : 01-53-94-20-41          +
+ 75013 Paris           | email: certsvp@renater.fr     +
=========================================================