The Cluster::deliveredEvent function in cluster/Cluster.cpp in Apache Qpid, as used in Red Hat Enterprise MRG before 1.3 and other products, allows remote attackers to cause a denial of service (daemon crash and cluster outage) via invalid AMQP data.
https://rhn.redhat.com/errata/RHSA-2010-0774.html
https://rhn.redhat.com/errata/RHSA-2010-0773.html
https://bugzilla.redhat.com/show_bug.cgi?id=642373
http://www.vupen.com/english/advisories/2010/2684
http://svn.apache.org/viewvc?revision=785788&view=revision