Incomplete blacklist vulnerability in CoreTypes in Apple Mac OS X before 10.5.3 allows user-assisted remote attackers to execute arbitrary code via an (1) Automator, (2) Help, (3) Safari, or (4) Terminal content type for a downloadable object, which does not trigger a "potentially unsafe" warning message in (a) the Download Validation feature in Mac OS X 10.4 or (b) the Quarantine feature in Mac OS X 10.5.
https://exchange.xforce.ibmcloud.com/vulnerabilities/42711
http://www.vupen.com/english/advisories/2008/1697
http://www.us-cert.gov/cas/techalerts/TA08-150A.html
http://www.securityfocus.com/bid/29481
http://www.securityfocus.com/bid/29412
http://securitytracker.com/id?1020137
http://secunia.com/advisories/30430
http://lists.apple.com/archives/security-announce/2008//May/msg00001.html