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Ubuntu Security Notice USN-2302-1
July 30, 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

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

References:
  http://www.ubuntu.com/usn/usn-2302-1
  CVE-2014-0075, CVE-2014-0096, CVE-2014-0099

Package Information:
  https://launchpad.net/ubuntu/+source/tomcat7/7.0.52-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/tomcat6/6.0.35-1ubuntu3.5
  https://launchpad.net/ubuntu/+source/tomcat6/6.0.24-2ubuntu1.16