The org.jboss.security.plugins.mapping.JBossMappingManager implementation in JBoss Security in Red Hat JBoss Enterprise Application Platform (EAP) before 6.3.3 uses the default security domain when a security domain is undefined, which allows remote authenticated users to bypass intended access restrictions by leveraging credentials on the default domain for a role that is also on the application domain.
https://exchange.xforce.ibmcloud.com/vulnerabilities/100889
http://www.securitytracker.com/id/1031741
http://rhn.redhat.com/errata/RHSA-2015-0851.html
http://rhn.redhat.com/errata/RHSA-2015-0850.html
http://rhn.redhat.com/errata/RHSA-2015-0218.html
http://rhn.redhat.com/errata/RHSA-2015-0217.html