The ability to reboot the machine is controlled via policykit; for more details, see http://askubuntu.com/questions/1190/how-can-i-make- shutdown-not-require-admin-password -- this answer looks particularly nice: http://askubuntu.com/a/486425/33812
Thanks ** Changed in: lightdm (Ubuntu) Status: New => Invalid ** Information type changed from Private Security to Public -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1342047 Title: lightdm allows unprivileged remote users to shutdown or reboot machine To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1342047/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs