The doFilter function in webapp/PushHandlerFilter.java in JBoss RichFaces 4.3.4, 4.3.5, and 5.x allows remote attackers to cause a denial of service (memory consumption and out-of-memory error) via a large number of malformed atmosphere push requests.
https://issues.jboss.org/browse/RF-13250
https://bugzilla.redhat.com/show_bug.cgi?id=1067268