NetworkManager 0.9 and earlier allows local users to use other users' certificates or private keys when making a connection via the file path when adding a new connection.
https://security-tracker.debian.org/tracker/CVE-2012-1096
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2012-1096
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-1096
https://bugzilla.gnome.org/show_bug.cgi?id=793329