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Red Hat Security Advisory 2012-1344-01

Red Hat Security Advisory 2012-1344-01
Posted Oct 8, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1344-01 - 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. An attack technique was found against the W3C XML Encryption Standard when block ciphers were used in cipher-block chaining mode. A remote attacker could use this flaw to conduct chosen-ciphertext attacks, leading to the recovery of the entire plain text of a particular cryptogram by examining the differences between SOAP responses sent from JBoss Web Services.

tags | advisory, java, remote, web
systems | linux, redhat
advisories | CVE-2011-1096
MD5 | b5987ecaec1135d3720ef5059dd9296e

Red Hat Security Advisory 2012-1344-01

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

Synopsis: Important: JBoss Enterprise Portal Platform 5.2.2 security update
Advisory ID: RHSA-2012:1344-01
Product: JBoss Enterprise Middleware
Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1344.html
Issue date: 2012-10-08
CVE Names: CVE-2011-1096
=====================================================================

1. Summary:

An update for the JBoss Web Services component in JBoss Enterprise Portal
Platform 5.2.2 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 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.

An attack technique was found against the W3C XML Encryption Standard when
block ciphers were used in cipher-block chaining (CBC) mode. A remote
attacker could use this flaw to conduct chosen-ciphertext attacks, leading
to the recovery of the entire plain text of a particular cryptogram by
examining the differences between SOAP (Simple Object Access Protocol)
responses sent from JBoss Web Services. (CVE-2011-1096)

Red Hat would like to thank Juraj Somorovsky of Ruhr-University Bochum
for reporting this issue.

Note: Manual action is required to apply this update. The CVE-2011-1096
issue is an attack on the WS-Security standard itself. Using new
Galois/Counter Mode (GCM) based algorithms for WS-Security encryption is
the W3C suggested way of dealing with this issue. The WS-SecurityPolicy
specification has not yet been updated to include the new algorithms.
Consequently, Apache CXF independently added support for such GCM based
algorithms through AlgorithmSuites called "Basic128GCM", "Basic192GCM", and
"Basic256GCM" in the namespace
"http://cxf.apache.org/custom/security-policy".

To apply these policies to your applications that use WS-Security
encryption, specify them in the application's WSDL file. Refer to Red Hat
Bugzilla bug 681916 for an example.

All users of JBoss Enterprise Portal Platform 5.2.2 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 all
applications deployed on JBoss Enterprise Portal Platform, along with all
customized configuration files, and any databases and database settings.

Note that it is recommended to halt the JBoss Enterprise Portal Platform
server by stopping the JBoss Application Server process before installing
this update, and then after installing the update, restart the JBoss
Enterprise Portal Platform server by starting the JBoss Application Server
process.

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

681916 - CVE-2011-1096 jbossws: Prone to character encoding pattern attack (XML Encryption flaw)

5. References:

https://www.redhat.com/security/data/cve/CVE-2011-1096.html
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=jbportal&downloadType=securityPatches&version=5.2.2
https://bugzilla.redhat.com/show_bug.cgi?id=681916

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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