USN-2302-1: Tomcat vulnerabilities

30 July 2014

tomcat6, tomcat7 vulnerabilities

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

  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS

Summary

Several security issues were fixed in Tomcat.

Software Description

  • tomcat7 - Servlet and JSP engine
  • tomcat6 - Servlet and JSP engine

Details

David Jorm discovered that Tomcat incorrectly handled certain requests submitted using chunked transfer encoding. A remote attacker could use this flaw to cause the Tomcat server to consume resources, resulting in a denial of service. (CVE-2014-0075)

It was discovered that Tomcat did not properly restrict XSLT stylesheets. An attacker could use this issue with a crafted web application to bypass security-manager restrictions and read arbitrary files. (CVE-2014-0096)

It was discovered that Tomcat incorrectly handled certain Content-Length headers. A remote attacker could use this flaw in configurations where Tomcat is behind a reverse proxy to perform HTTP request smuggling attacks. (CVE-2014-0099)

Update instructions

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

Ubuntu 14.04 LTS
libtomcat7-java - 7.0.52-1ubuntu0.1
Ubuntu 12.04 LTS
libtomcat6-java - 6.0.35-1ubuntu3.5
Ubuntu 10.04 LTS
libtomcat6-java - 6.0.24-2ubuntu1.16

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