Oracle Glassfish 2.1.1, 3.0.1, and 3.1.1, as used in Communications Server 2.0, Sun Java System Application Server 8.1 and 8.2, and possibly other products, computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters, aka Oracle security ticket S0104869.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16908
https://github.com/FireFart/HashCollision-DOS-POC/blob/master/HashtablePOC.py
http://www.oracle.com/technetwork/topics/security/cpujan2013-1515902.html
http://www.oracle.com/technetwork/topics/security/cpujan2012-366304.html
http://www.oracle.com/technetwork/topics/security/cpuapr2012-366314.html
http://www.ocert.org/advisories/ocert-2011-003.html
http://www.nruns.com/_downloads/advisory28122011.pdf
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
http://www.kb.cert.org/vuls/id/903934
http://www.debian.org/security/2012/dsa-2420
http://security.gentoo.org/glsa/glsa-201406-32.xml
http://secunia.com/advisories/57126
http://secunia.com/advisories/48950
http://secunia.com/advisories/48589
http://secunia.com/advisories/48074
http://secunia.com/advisories/48073
http://rhn.redhat.com/errata/RHSA-2013-1455.html
http://rhn.redhat.com/errata/RHSA-2012-0514.html
http://marc.info/?l=bugtraq&m=139344343412337&w=2
http://marc.info/?l=bugtraq&m=134254957702612&w=2
http://marc.info/?l=bugtraq&m=134254866602253&w=2
http://marc.info/?l=bugtraq&m=133847939902305&w=2
http://marc.info/?l=bugtraq&m=133364885411663&w=2
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00010.html
http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html