CVE-2010-1838
Directory Services in Apple Mac OS X 10.5.8 and 10.6.x before 10.6.5 does not properly handle errors associated with disabled mobile accounts, which allows remote attackers to bypass authentication by providing a valid account name.
Date published : 2010-11-15
http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html