RHSA-2016:1435 - Security Advisory

Topic

An update is now available for Red Hat JBoss Enterprise Application Platform from the Customer Portal.

Red Hat Product Security has rated this update as having a security impact
of Critical. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

Description

Red Hat JBoss Enterprise Application Platform 6 is a platform for Java applications based on JBoss Application Server 7.

This release of Red Hat JBoss Enterprise Application Platform 6.4.9 serves as a replacement for Red Hat JBoss Enterprise Application Platform 6.4.8, and includes bug fixes and enhancements. Documentation for these changes will be available shortly from the Red Hat JBoss Enterprise Application Platform 6.4.9 Release Notes, linked to in the References.

Security Fix(es):

• It was found that JGroups did not require necessary headers for encrypt

and auth protocols from new nodes joining the cluster. An attacker could
use this flaw to bypass security restrictions, and use this vulnerability
to send and receive messages within the cluster, leading to information
disclosure, message spoofing, or further possible attacks. (CVE-2016-2141)

More information about this vulnerability is available at: https://access.redhat.com/articles/2360521

• A directory traversal flaw was found in Tomcat's and JBoss Web's

RequestUtil.java. A remote, authenticated user could use this flaw to
bypass intended SecurityManager restrictions and list a parent directory
via a '/..' in a pathname used by a web application in a getResource,
getResourceAsStream, or getResourcePaths call, as demonstrated by the
$CATALINA_BASE/webapps directory. (CVE-2015-5174)

The CVE-2016-2141 issue was discovered by Dennis Reed (Red Hat).

Solution

The References section of this erratum contains a download link (you must log in to download the update). Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications.

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 - 1265698 - CVE-2015-5174 tomcat: URL Normalization issue
• BZ - 1313589 - CVE-2016-2141 JGroups: Authorization bypass

CVEs

• CVE-2015-5174
• CVE-2016-2141

References

• https://access.redhat.com/security/updates/classification/#critical
• https://access.redhat.com/documentation/en/jboss-enterprise-application-platform/
• https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=appplatform&downloadType=securityPatches&version=6.4
• https://access.redhat.com/articles/2360521