Ubuntu Security Notice USN-727-2 – USN-727-1 fixed vulnerabilities in network-manager-applet. This advisory provides the corresponding updates for NetworkManager. It was discovered that NetworkManager did not properly enforce permissions when responding to dbus requests. A local user could perform dbus queries to view system and user network connection passwords and pre-shared keys.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/75408/USN-727-2.txt
Source: https://packetstormsecurity.com/files/75408/Ubuntu-Security-Notice-727-2.html