Versions of Tomcat 7.0.x earlier than 7.0.8 are potentially affected by a denial of service vulnerability becasue the NIO connector expands its buffer endlessly during request line processing.
Binary data 800621.prm
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0534
tomcat.apache.org/security-7.html