14 DAY TRIAL // Canonical has published details in a security notice about a KDE-Libs vulnerability in Ubuntu 14.04 LTS and Ubuntu 12.04 LTS operating systems that has been found and fixed.
The Ubuntu developers have closed a small vulnerability with KDE-Libs that would cause kauth to be tricked into bypassing polkit authorizations.
According to the security notice, "It was discovered that kauth was using polkit in an unsafe manner. A local attacker could possibly use this issue to bypass intended polkit authorizations."
For a more detailed description of the problems, you can see Canonical's security notification. Users should upgrade their Linux distribution in order to correct this issue.
KDE-Libs is actually the KDE Library API Reference and it's part of the greater KDE, which can be installed from the official repositories.
The flaw can be fixed if you upgrade your system(s) to the latest kdelibs5-pluginspackages specific to each distribution. To apply the patch, users can simply run the Update Manager application.
If you don't want to use the Software Updater, you can open a terminal and enter the following commands (you will need to be root):
sudo apt-get dist-upgrade