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

Medium Log Correlation Engine Plugin ID 800626

Synopsis

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

Description

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.

Solution

Upgrade to Apache Tomcat 5.5.35 or later.

See Also

http://tomcat.apache.org/security-5.html#Fixed_in_Apache_Tomcat_5.5.35

http://www.nruns.com/_downloads/advisory28122011.pdf

http://www.nessus.org/u?d97dc97c

Plugin Details

Severity: Medium

ID: 800626

File Name: 800626.prm

Family: Web Servers

Published: 2012/02/22

Nessus ID: 57540

Risk Information

Risk Factor: Medium

CVSSv2

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