Apache QPID 0.14, 0.16, and earlier uses a NullAuthenticator mechanism to authenticate catch-up shadow connections to AMQP brokers, which allows remote attackers to bypass authentication.
rhn.redhat.com/errata/RHSA-2012-1277.html
rhn.redhat.com/errata/RHSA-2012-1279.html
secunia.com/advisories/50186
secunia.com/advisories/50698
svn.apache.org/viewvc?view=revision&revision=1352992
www.openwall.com/lists/oss-security/2012/08/09/6
www.securityfocus.com/bid/54954
bugzilla.redhat.com/show_bug.cgi?id=836276
exchange.xforce.ibmcloud.com/vulnerabilities/77568
issues.apache.org/jira/browse/QPID-3849