Red Hat Security Advisory 2013-1429-01 – The Apache Commons FileUpload component can be used to add a file upload capability to your applications. A flaw was found in the way the DiskFileItem class handled NULL characters in file names. A remote attacker able to supply a serialized instance of the DiskFileItem class, which will be deserialized on a server, could use this flaw to write arbitrary content to any location on the server that is accessible to the user running the application server process. All users of Red Hat JBoss Web Server 1.0.2 as provided from the Red Hat Customer Portal are advised to apply this update…. Red Hat Security Advisory 2013-1429-01 – The Apache Commons FileUpload component can be used to add a file upload capability to your applications. A flaw was found in the way the DiskFileItem class handled NULL characters in file names. A remote attacker able to supply a serialized instance of the DiskFileItem class, which will be deserialized on a server, could use this flaw to write arbitrary content to any location on the server that is accessible to the user running the application server process. All users of Red Hat JBoss Web Server 1.0.2 as provided from the Red Hat Customer Portal are advised to apply this update.

Read more http://packetstormsecurity.com/files/123616/RHSA-2013-1429-01.txt