CVE-2008-0049
AppKit in Apple Mac OS X 10.4.11 inadvertently makes an NSApplication mach port available for inter-process communication instead of inter-thread communication, which allows local users to execute arbitrary code via crafted messages to privileged applications.
Date published : 2008-03-18
http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html