The Passcode Lock implementation in Apple iOS before 6.0.1 does not properly manage the lock state, which allows physically proximate attackers to bypass an intended passcode requirement and access Passbook passes via unspecified vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/79747
http://www.securityfocus.com/bid/56363
http://support.apple.com/kb/HT5567
http://lists.apple.com/archives/security-announce/2012/Nov/msg00000.html
http://archives.neohapsis.com/archives/bugtraq/2012-11/0012.html