USN-1359-1: Tomcat vulnerabilities

13 February 2012

Tomcat could be made to crash or expose sensitive information if it received specially crafted network traffic.

Releases

Packages

  • 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
Ubuntu 11.04
Ubuntu 10.10
Ubuntu 10.04

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