CVE-2011-5034
Apache Geronimo 2.2.1 and earlier 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. NOTE: this might overlap CVE-2011-4461.
Date published : 2011-12-29
http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html