Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

                   Important: jboss-seam security update
                               21 April 2011


        AusCERT Security Bulletin Summary

Product:           jboss-seam
Publisher:         Red Hat
Operating System:  Red Hat
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2011-1484  

Reference:         ESB-2011.0458

Original Bulletin: 

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Hash: SHA1

                   Red Hat Security Advisory

Synopsis:          Important: jboss-seam security update
Advisory ID:       RHSA-2011:0462-01
Product:           JBoss Enterprise Application Platform
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2011-0462.html
Issue date:        2011-04-20
CVE Names:         CVE-2011-1484 

1. Summary:

An updated jboss-seam.jar file for JBoss Enterprise Application Platform
4.3.0.CP09 and 5.1.0 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:

The JBoss Seam 2 framework is an application framework for building web
applications in Java.

It was found that JBoss Seam 2 did not properly block access to JBoss
Expression Language (EL) constructs in page exception handling, allowing
arbitrary Java methods to be executed. A remote attacker could use this
flaw to execute arbitrary code via a specially-crafted URL provided to
certain applications based on the JBoss Seam 2 framework. Note: A properly
configured and enabled Java Security Manager would prevent exploitation of
this flaw. (CVE-2011-1484)

Red Hat would like to thank Martin Kouba from IT SYSTEMS a.s. for reporting
this issue.

All users of JBoss Enterprise Application Platform 4.3.0.CP09 and 5.1.0 as
provided from the Red Hat Customer Portal are advised to install this

3. Solution:

The References section of this erratum contains download links (you must
log in to download the updated file). Before applying the update, backup
your existing JBoss Enterprise Application Platform installation (including
all applications and configuration files).

Important: JBoss Enterprise Application Platform 4.3.0.CP09 ships with both
the JBoss Seam and JBoss Seam 2 frameworks. Ensure you only replace version
2 with the updated jboss-seam.jar file.

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

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

692421 - CVE-2011-1484 JBoss Seam privilege escalation caused by EL interpolation in FacesMessages

5. References:


6. Contact:

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

Copyright 2011 Red Hat, Inc.
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