Ubuntu Security Notice USN-708-1 – It was discovered that an installation script in the HPLIP package would change permissions on the hplip config files located in user’s home directories. A local user could exploit this and change permissions on arbitrary files upon an HPLIP installation or upgrade, which could lead to root privileges.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/73802/USN-708-1.txt
Source: https://packetstormsecurity.com/files/73802/Ubuntu-Security-Notice-708-1.html