CVE-2011-3422
The Keychain implementation in Apple Mac OS X 10.6.8 and earlier does not properly handle an untrusted attribute of a Certification Authority certificate, which makes it easier for man-in-the-middle attackers to spoof arbitrary SSL servers via an Extended Validation certificate, as demonstrated by https access with Safari.
Date published : 2011-09-09
http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html