Scientific Linux Security Update : tomcat6 on SL6.x (20120411)

medium Nessus Plugin ID 61300

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Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

It was found that the Java hashCode() method implementation was susceptible to predictable hash collisions. A remote attacker could use this flaw to cause Tomcat to use an excessive amount of CPU time by sending an HTTP request with a large number of parameters whose names map to the same hash value. This update introduces a limit on the number of parameters processed per request to mitigate this issue.
The default limit is 512 for parameters and 128 for headers. These defaults can be changed by setting the org.apache.tomcat.util.http.Parameters.MAX_COUNT and org.apache.tomcat.util.http.MimeHeaders.MAX_COUNT system properties.
(CVE-2011-4858)

It was found that Tomcat did not handle large numbers of parameters and large parameter values efficiently. A remote attacker could make Tomcat use an excessive amount of CPU time by sending an HTTP request containing a large number of parameters or large parameter values.
This update introduces limits on the number of parameters and headers processed per request to address this issue. Refer to the CVE-2011-4858 description for information about the org.apache.tomcat.util.http.Parameters.MAX_COUNT and org.apache.tomcat.util.http.MimeHeaders.MAX_COUNT system properties.
(CVE-2012-0022)

Users of Tomcat should upgrade to these updated packages, which correct these issues. Tomcat must be restarted for this update to take effect.

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 61300

File Name: sl_20120411_tomcat6_on_SL6.nasl

Version: 1.9

Type: local

Agent: unix

Family: Scientific Linux Local Security Checks

Published: 8/1/2012

Updated: 1/14/2021

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.5

CVSS v2

Risk Factor: Medium

Base Score: 5

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

Vulnerability Information

CPE: p-cpe:/a:fermilab:scientific_linux:tomcat6-webapps, p-cpe:/a:fermilab:scientific_linux:tomcat6, p-cpe:/a:fermilab:scientific_linux:tomcat6-jsp-2.1-api, p-cpe:/a:fermilab:scientific_linux:tomcat6-servlet-2.5-api, p-cpe:/a:fermilab:scientific_linux:tomcat6-javadoc, p-cpe:/a:fermilab:scientific_linux:tomcat6-docs-webapp, x-cpe:/o:fermilab:scientific_linux, p-cpe:/a:fermilab:scientific_linux:tomcat6-el-2.1-api, p-cpe:/a:fermilab:scientific_linux:tomcat6-admin-webapps, p-cpe:/a:fermilab:scientific_linux:tomcat6-lib

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 4/11/2012

Vulnerability Publication Date: 1/5/2012

Reference Information

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

Detections

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