RHSA-2011:0462 - Security Advisory

Topic

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.

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
update.

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.

Affected Products

• JBoss Enterprise Application Platform Text-Only Advisories x86_64

Fixes

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

CVEs

• CVE-2011-1484

References

• https://access.redhat.com/security/updates/classification/#important
• https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?downloadType=securityPatches&product=appplatform&version=5.1.0
• https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?downloadType=securityPatches&product=appplatform&version=4.3.0.GA_CP09