[USN-2654-1] Tomcat vulnerabilities

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=31aZ
-----END PGP SIGNATURE-----
==========================================================================
Ubuntu Security Notice USN-2654-1
June 25, 2015

tomcat7 vulnerabilities
==========================================================================

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

- Ubuntu 15.04
- Ubuntu 14.10
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in Tomcat.

Software Description:
- 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 memory consumption, resulting in a
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 LTS:
libtomcat7-java 7.0.52-1ubuntu0.3

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

References:
http://www.ubuntu.com/usn/usn-2654-1
CVE-2014-0119, CVE-2014-0227, CVE-2014-0230, CVE-2014-7810

Package Information:
https://launchpad.net/ubuntu/+source/tomcat7/7.0.56-2ubuntu0.1
https://launchpad.net/ubuntu/+source/tomcat7/7.0.55-1ubuntu0.2
https://launchpad.net/ubuntu/+source/tomcat7/7.0.52-1ubuntu0.3