Apache Tomcat 7.x < 7.0.23 Hash Collision DoS
Medium Nessus Plugin ID 57541
SynopsisThe remote web server is affected by a denial of service vulnerability.
DescriptionAccording to its self-reported version number, the instance of Apache Tomcat 7.x listening on the remote host is prior to 7.0.23. It is, therefore, affected by a denial of service vulnerability.
Large numbers of crafted form parameters can cause excessive CPU consumption due to hash collisions.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
SolutionUpgrade to Apache Tomcat version 7.0.23 or later. Alternatively, as a workaround, set the 'maxPostSize' configuration variable to the lowest sensible value required to support your hosted applications.