CVE-2008-4234
Incomplete blacklist vulnerability in the Quarantine feature in CoreTypes in Apple Mac OS X 10.5 before 10.5.6 allows user-assisted remote attackers to execute arbitrary code via an executable file with the content type indicating no application association for the file, which does not trigger a "potentially unsafe" warning message.
Date published : 2008-12-16
http://lists.apple.com/archives/security-announce//2008//Dec/msg00000.html