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Red Hat Security Advisory 2012-0441-01

Red Hat Security Advisory 2012-0441-01
Posted Apr 3, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-0441-01 - JBoss Enterprise BRMS Platform is a business rules management system for the management, storage, creation, modification, and deployment of JBoss Rules. This roll up patch serves as a cumulative upgrade for JBoss Enterprise BRMS Platform 5.2.0. It includes various bug fixes and enhancements. The following security issues are also fixed with this release: It was found that RESTEasy was vulnerable to XML External Entity attacks. If a remote attacker submitted a request containing an external XML entity to a RESTEasy endpoint, the entity would be resolved, allowing the attacker to read files accessible to the user running the application server. This flaw affected DOM Document and JAXB input.

tags | advisory, remote, xxe
systems | linux, redhat
advisories | CVE-2011-4314, CVE-2012-0818
MD5 | a89039a4a91c060565a037962444f37e

Red Hat Security Advisory 2012-0441-01

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

Synopsis: Moderate: JBoss Enterprise BRMS Platform 5.2.0 update
Advisory ID: RHSA-2012:0441-01
Product: JBoss Enterprise Middleware
Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0441.html
Issue date: 2012-04-02
CVE Names: CVE-2011-4314 CVE-2012-0818
=====================================================================

1. Summary:

JBoss Enterprise BRMS Platform 5.2.0 roll up patch 1, which fixes two
security issues, various bugs, and adds enhancements, is now available from
the Red Hat Customer Portal.

The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

2. Description:

JBoss Enterprise BRMS Platform is a business rules management system for
the management, storage, creation, modification, and deployment of JBoss
Rules.

This roll up patch serves as a cumulative upgrade for JBoss Enterprise BRMS
Platform 5.2.0. It includes various bug fixes and enhancements. The
following security issues are also fixed with this release:

It was found that RESTEasy was vulnerable to XML External Entity (XXE)
attacks. If a remote attacker submitted a request containing an external
XML entity to a RESTEasy endpoint, the entity would be resolved, allowing
the attacker to read files accessible to the user running the application
server. This flaw affected DOM (Document Object Model) Document and JAXB
(Java Architecture for XML Binding) input. (CVE-2012-0818)

It was found that the Attribute Exchange (AX) extension of OpenID4Java was
not checking to ensure attributes were signed. If AX was being used to
receive information that an application only trusts the identity provider
to assert, a remote attacker could use this flaw to conduct
man-in-the-middle attacks and compromise the integrity of the information
via a specially-crafted request. By default, only the JBoss Seam openid
example application uses OpenID4Java. (CVE-2011-4314)

Warning: Before applying the update, back up your existing JBoss Enterprise
BRMS Platform installation (including its databases, applications,
configuration files, and so on).

All users of JBoss Enterprise BRMS Platform 5.2.0 as provided from the Red
Hat Customer Portal are advised to apply this roll up patch.

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 BRMS Platform installation (including its
databases, applications, configuration files, and so on).

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

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

754386 - CVE-2011-4314 openid4java (AX extension): MITM due to improper validation of AX attribute signatures
785631 - CVE-2012-0818 RESTEasy: XML eXternal Entity (XXE) flaw
5. References:

https://www.redhat.com/security/data/cve/CVE-2011-4314.html
https://www.redhat.com/security/data/cve/CVE-2012-0818.html
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=brms&downloadType=securityPatches&version=5.2.0

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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