Canonical has updated the Firefox packages for Ubuntu 14.10, Ubuntu 14.04 LTS, and Ubuntu 12.04 LTS operating systems. If you have this application already installed, you only need to update your system.The Ubuntu maintainers for the Firefox package have been very quick and they've pushed the new Firefox 35 release very fast. All the supported Ubuntu OSes now have access to the new release and users will find them available in the repos.
"Bobby Holley discovered that some DOM objects with certain properties can bypass XrayWrappers in some circumstances. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit this to bypass security restrictions" reads the security notice from Canonical.
This is just one of the many security issues that have been corrected and there are many more where that came from. If also want to see the new features landed in Firefox 35, you should check our initial report.
Ubuntu 12.04 LTS and Ubuntu 14.04 LTS users will get the latest Firefox version by updating their system via the Software Update or through a terminal. It's also possible to download the binary Firefox 35 package and run it without having to install it.