Settings in Apple iOS before 7.1.2 allows physically proximate attackers to bypass an intended iCloud password requirement, and turn off the Find My iPhone service, by leveraging incorrect state management.
http://www.securitytracker.com/id/1030500
http://www.securityfocus.com/bid/68276
http://archives.neohapsis.com/archives/bugtraq/2014-06/0174.html