CVE-2008-3610
Race condition in Login Window in Apple Mac OS X 10.5 through 10.5.4, when a blank-password account is enabled, allows attackers to bypass password authentication and login to any account via multiple attempts to login to the blank-password account, followed by selection of an arbitrary account from the user list.
Date published : 2008-09-16
http://lists.apple.com/archives/security-announce//2008/Sep/msg00005.html