USN-2654-1: Tomcat vulnerabilities

Releases

• Ubuntu 15.04
• Ubuntu 14.10
• Ubuntu 14.04 ESM

Packages

• tomcat7 - Servlet and JSP engine

Details

It was discovered that the Tomcat XML parser incorrectly handled XML
External Entities (XXE). A remote attacker could possibly use this issue to
read arbitrary files. This issue only affected Ubuntu 14.04 LTS.
(CVE-2014-0119)

It was discovered that Tomcat incorrectly handled data with malformed
chunked transfer coding. A remote attacker could possibly use this issue to
conduct HTTP request smuggling attacks, or cause Tomcat to consume
resources, resulting in a denial of service. This issue only affected
Ubuntu 14.04 LTS. (CVE-2014-0227)

It was discovered that Tomcat incorrectly handled HTTP responses occurring
before the entire request body was finished being read. A remote attacker
could possibly use this issue to cause a limited denial of service. This
issue only affected Ubuntu 14.04 LTS. (CVE-2014-0230)

It was discovered that the Tomcat Expression Language (EL) implementation
incorrectly handled accessible interfaces implemented by inaccessible
classes. An attacker could possibly use this issue to bypass a
SecurityManager protection mechanism. (CVE-2014-7810)

Update instructions

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

Ubuntu 15.04

• libtomcat7-java - 7.0.56-2ubuntu0.1

Ubuntu 14.10

• libtomcat7-java - 7.0.55-1ubuntu0.2

Ubuntu 14.04

• libtomcat7-java - 7.0.52-1ubuntu0.3

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

References

• CVE-2014-0119
• CVE-2014-0227
• CVE-2014-0230
• CVE-2014-7810

Related notices

• USN-2655-1