RHSA-2015:2578 - Security Advisory

Topic

An update for the Apache Commons Collections component that fixes one
security issue is now available from the Red Hat Customer Portal for Red
Hat JBoss BRMS 6.1.0.

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

Description

Apache Commons Collections is a library built upon Java JDK classes by
providing new interfaces, implementations and utilities.

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

All users of Red Hat JBoss BRMS 6.1.0 as provided from the Red
Hat Customer Portal are advised to apply this security update.

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 Red Hat JBoss BRMS installation (including its databases,
applications, configuration files, and so on).

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

Affected Products

• Red Hat JBoss Middleware Text-Only Advisories for MIDDLEWARE 1 x86_64

Fixes

• BZ - 1279330 - CVE-2015-7501 apache-commons-collections: InvokerTransformer code execution during deserialisation

CVEs

• CVE-2015-7501

References

• https://access.redhat.com/security/updates/classification/#critical
• https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=brms&downloadType=securityPatches&version=6.1.0
• https://access.redhat.com/solutions/2045023