USN-3081-1: Tomcat vulnerability

Releases

• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• tomcat6 - Servlet and JSP engine
• tomcat7 - Servlet and JSP engine
• tomcat8 - Servlet and JSP engine

Details

Dawid Golunski discovered that the Tomcat init script incorrectly handled
creating log files. A remote attacker could possibly use this issue to
obtain root privileges. (CVE-2016-1240)

This update also reverts a change in behaviour introduced in USN-3024-1 by
setting mapperContextRootRedirectEnabled to True by default.

Update instructions

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

Ubuntu 16.04

• libtomcat8-java - 8.0.32-1ubuntu1.2
• tomcat8 - 8.0.32-1ubuntu1.2

Ubuntu 14.04

• libtomcat7-java - 7.0.52-1ubuntu0.7
• tomcat7 - 7.0.52-1ubuntu0.7

Ubuntu 12.04

• libtomcat6-java - 6.0.35-1ubuntu3.8
• tomcat6 - 6.0.35-1ubuntu3.8

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

References

• CVE-2016-1240
• https://launchpad.net/bugs/1609819

Related notices

• USN-3081-2: libservlet2.5-java, tomcat6, libservlet2.5-java-doc