USN-1252-1: Tomcat vulnerabilities

8 November 2011

tomcat6 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.10
  • Ubuntu 10.04 LTS

Summary

Tomcat could be made to crash or expose sensitive information over the network.

Software Description

  • tomcat6 - Servlet and JSP engine

Details

It was discovered that Tomcat incorrectly implemented HTTP DIGEST authentication. An attacker could use this flaw to perform a variety of authentication attacks. (CVE-2011-1184)

Polina Genova discovered that Tomcat incorrectly created log entries with passwords when encountering errors during JMX user creation. A local attacker could possibly use this flaw to obtain sensitive information. This issue only affected Ubuntu 10.04 LTS, 10.10 and 11.04. (CVE-2011-2204)

It was discovered that Tomcat incorrectly validated certain request attributes when sendfile is enabled. A local attacker could bypass intended restrictions, or cause the JVM to crash, resulting in a denial of service. (CVE-2011-2526)

It was discovered that Tomcat incorrectly handled certain AJP requests. A remote attacker could use this flaw to spoof requests, bypass authentication, and obtain sensitive information. This issue only affected Ubuntu 10.04 LTS, 10.10 and 11.04. (CVE-2011-3190)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 11.10
libtomcat6-java - 6.0.32-5ubuntu1.1
Ubuntu 11.04
libtomcat6-java - 6.0.28-10ubuntu2.2
Ubuntu 10.10
libtomcat6-java - 6.0.28-2ubuntu1.5
Ubuntu 10.04 LTS
libtomcat6-java - 6.0.24-2ubuntu1.9

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References