USN-2654-1: Tomcat vulnerabilities

25 June 2015

Several security issues were fixed in Tomcat.

Releases

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
Ubuntu 14.10
Ubuntu 14.04

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

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