Apache Tomcat 5.5.x < 5.5.35 Hash Collision Denial of Service

Medium Log Correlation Engine Plugin ID 800626


The remote web server is affected by a denial of service vulnerability.


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.


Upgrade to Apache Tomcat 5.5.35 or later.

See Also




Plugin Details

Severity: Medium

ID: 800626

Family: Web Servers

Published: 2012/02/22

Nessus ID: 57540

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

Temporal Score: 4.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

Vulnerability Information

Patch Publication Date: 2012/01/16

Vulnerability Publication Date: 2011/12/18

Reference Information

CVE: CVE-2011-4858, CVE-2012-0022

BID: 51200, 51447