USN-1359-1: Tomcat vulnerabilities

13 February 2012

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 if it received specially crafted network traffic.

Software Description

  • tomcat6 - Servlet and JSP engine

Details

It was discovered that Tomcat incorrectly performed certain caching and recycling operations. A remote attacker could use this flaw to obtain read access to IP address and HTTP header information in certain cases. This issue only applied to Ubuntu 11.10. (CVE-2011-3375)

It was discovered that Tomcat computed hash values for form parameters without restricting the ability to trigger hash collisions predictably. A remote attacker could cause a denial of service by sending many crafted parameters. (CVE-2011-4858)

It was discovered that Tomcat incorrectly handled parameters. A remote attacker could cause a denial of service by sending requests with a large number of parameters and values. (CVE-2012-0022)

Update instructions

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

Ubuntu 11.10
libtomcat6-java - 6.0.32-5ubuntu1.2
Ubuntu 11.04
libtomcat6-java - 6.0.28-10ubuntu2.3
Ubuntu 10.10
libtomcat6-java - 6.0.28-2ubuntu1.6
Ubuntu 10.04 LTS
libtomcat6-java - 6.0.24-2ubuntu1.10

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