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                   Red Hat Security Advisory

Synopsis:          Critical: Red Hat JBoss BRMS 6.2.0 update
Advisory ID:       RHSA-2015:2559-01
Product:           Red Hat JBoss BRMS
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2015-2559.html
Issue date:        2015-12-07
CVE Names:         CVE-2015-0250 CVE-2015-6748 CVE-2015-7501 
=====================================================================

1. Summary:

Red Hat JBoss BRMS 6.2.0, which fixes three security issues, several
bugs, and adds various enhancements, is now available from the Red Hat
Customer Portal.

Red Hat Product Security has rated this update as having Critical 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:

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

This release of Red Hat JBoss BRMS 6.2.0 serves as a replacement for Red
Hat JBoss BRMS 6.1.2, and includes bug fixes and enhancements. Refer to the
Red Hat JBoss BRMS 6.2.0 Release Notes for information on the most
significant of these changes. The Release Notes are available at
https://access.redhat.com/documentation/en/red-hat-jboss-brms/

The following security issues are also fixed with this release:

It was found that the Apache commons-collections library permitted code
execution when deserializing objects involving a specially constructed
chain of classes. A remote attacker could use this flaw to execute
arbitrary code with the permissions of the application using the
commons-collections library. (CVE-2015-7501)

Further information about this security flaw may be found at:
https://access.redhat.com/solutions/2045023

It was found that batik was vulnerable to XML External Entity attacks when
parsing SVG files. A remote attacker able to send malicious SVG content to
the affected server could use this flaw to read files accessible to the
user running the application server, and potentially perform other more
advanced XXE attacks. (CVE-2015-0250)

It was found that jsoup did not properly validate user-supplied HTML
content; certain HTML snippets could get past the validator without being
detected as unsafe. A remote attacker could use a specially crafted HTML
snippet to execute arbitrary web script in the user's browser.
(CVE-2015-6748)

All users of Red Hat JBoss BRMS 6.1.2 as provided from the Red Hat Customer
Portal are advised to upgrade to Red Hat JBoss BRMS 6.2.0.

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 installation, including all applications, configuration files,
databases and database settings, and so on.

It is recommended to halt the server by stopping the JBoss Application
Server process before installing this update, and then after installing the
update, restart the server by starting the JBoss Application Server
process.

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

1203762 - CVE-2015-0250 batik: XML External Entity (XXE) injection in SVG parsing
1258310 - CVE-2015-6748 jsoup: XSS vulnerability related to incomplete tags at EOF
1279330 - CVE-2015-7501 apache-commons-collections: InvokerTransformer code execution during deserialisation

5. References:

https://access.redhat.com/security/cve/CVE-2015-0250
https://access.redhat.com/security/cve/CVE-2015-6748
https://access.redhat.com/security/cve/CVE-2015-7501
https://access.redhat.com/security/updates/classification/#critical
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=brms&downloadType=distributions&version=6.2.0
https://access.redhat.com/documentation/en/red-hat-jboss-brms/
https://access.redhat.com/solutions/2045023

6. Contact:

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

Copyright 2015 Red Hat, Inc.
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