The IronJacamar container before 1.0.12.Final for JBoss Application Server, when allow-multiple-users is enabled in conjunction with a security domain, does not use the credentials supplied in a getConnection function call, which allows remote attackers to obtain access to an arbitrary datasource connection in opportunistic circumstances via an invalid connection attempt.
rhn.redhat.com/errata/RHSA-2012-1591.html
rhn.redhat.com/errata/RHSA-2012-1592.html
rhn.redhat.com/errata/RHSA-2012-1594.html
secunia.com/advisories/51607
bugzilla.redhat.com/show_bug.cgi?id=843358
issues.jboss.org/browse/JBJCA-864
issues.jboss.org/browse/JBPAPP-9584
issues.jboss.org/secure/ReleaseNote.jspa?projectId=12310691&version=12319522