Versions of Tomcat 5.x earlier than 5.5.35 are potentially affected by a denial of service vulnerability. Large numbers of crafted form parameters can cause excessive CPU consumption due to hash collisions.
Binary data 800626.prm
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4858
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-0022
tomcat.apache.org/security-5.html#Fixed_in_Apache_Tomcat_5.5.35
www.nessus.org/u?d97dc97c
www.nruns.com/_downloads/advisory28122011.pdf