Apache Tomcat 5.x < 5.5.35 Hash Collision Denial of Service

medium Nessus Plugin ID 57540

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Synopsis

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

Description

According to its self-reported version number, the instance of Apache Tomcat 5.x listening on the remote host is prior to 5.5.35. 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.

Solution

Upgrade to Tomcat 5.5.35 or later. Alternatively, as a workaround, set the 'maxPostSize' configuration variable to the lowest sensible value required to support your hosted applications.

Plugin Details

Severity: Medium

ID: 57540

File Name: tomcat_5_5_35.nasl

Version: 1.20

Type: combined

Agent: windows, macosx, unix

Family: Web Servers

Published: 1/13/2012

Updated: 5/6/2024

Configuration: Enable thorough checks

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.5

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2011-4858

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:apache:tomcat:5

Required KB Items: installed_sw/Apache Tomcat

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/16/2012

Vulnerability Publication Date: 12/28/2011

Reference Information

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

BID: 51200, 51447

CERT: 903934

Detections

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