About update tomcat7 to 7.0.59 on trusy(server 14.04 LTS)

[xy-guan]

I'm using Ubuntu Server 14.04 LTS.
By default, tomcat7 version is 7.0.52, but has some Loophole, like CVE-2014-0230 (http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0230) and so on.
I want update the tomcat7 to 7.0.59 to fix it.
How to do this.thanks.

[deadflowr]

Why?
It's been patched.
See the changelogs here:
http://changelogs.ubuntu.com/changelogs/pool/main/t/tomcat7/tomcat7_7.0.52-1ubuntu0.3/changelog

Added: Here is The Ubuntu Security Notice on it, as well:
http://www.ubuntu.com/usn/usn-2654-1/