USN-976-1: Tomcat vulnerability

25 August 2010

tomcat6 vulnerability

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

  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 9.04


Software Description

  • tomcat6


It was discovered that Tomcat incorrectly handled invalid Transfer-Encoding headers. A remote attacker could send specially crafted requests containing invalid headers to the server and cause a denial of service, or possibly obtain sensitive information from other requests.

Update instructions

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

Ubuntu 10.04 LTS
libtomcat6-java - 6.0.24-2ubuntu1.3
Ubuntu 9.10
libtomcat6-java - 6.0.20-2ubuntu2.2
Ubuntu 9.04
libtomcat6-java - 6.0.18-0ubuntu6.3

To update your system, please follow these instructions:

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