If you wait a little while and get closer to the timestamp, sudo starts working, but with no password needed. I'm adding a security vulnerability as this is unexpected behavior of a part of the security subsystem.
** This bug has been flagged as a security issue -- sudo: timestamp too far in the future https://launchpad.net/bugs/76639 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
