JBoss Enterprise Application Platform is the market-leading platform for innovative and scalable Java applications. JBoss Enterprise Application Platform integrates the JBoss Application Server with JBoss Hibernate and JBoss Seam into a complete and simple enterprise solution.
This release of JBoss Enterprise Application Platform 5.1.1 serves as a replacement to JBoss Enterprise Application Platform 5.1.0. It includes various bug fixes which are detailed in the Release Notes. The Release Notes will be available shortly from the link in the References section.
The following security issue is also fixed with this release:
It was found that the fix for CVE-2011-1484 was incomplete: JBoss Seam 2 did not block access to all malicious 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-2011-2196)
If you have created custom applications that are packaged with a copy of the JBoss Seam 2 library, those applications must be rebuilt with the updated jboss-seam.jar file provided by this update.
Red Hat would like to thank the ObjectWorks+ Development Team at Nomura Research Institute for reporting this issue.
Warning: Before applying this update, please back up your JBoss Enterprise Application Platform's "jboss-as/server/[PROFILE]/deploy/" directory, along with all other customized configuration files.
All users of JBoss Enterprise Application Platform 5.1.0 as provided from the Red Hat Customer Portal are advised to upgrade to JBoss Enterprise Application Platform 5.1.1.