The directory server in Directory Service in Apple Mac OS X 10.6.8 allows remote attackers to obtain sensitive information from process memory via a crafted message.
http://www.securityfocus.com/bid/53458
http://www.securityfocus.com/bid/53445
http://support.apple.com/kb/HT5281
http://lists.apple.com/archives/security-announce/2012/May/msg00001.html