HelpViewer in Mac OS X 10.3.3 and 10.2.8 processes scripts that it did not initiate, which can allow attackers to execute arbitrary code, an issue that was originally reported as a directory traversal vulnerability in the Safari web browser using the runscript parameter in a help: URI handler.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16166
http://www.kb.cert.org/vuls/id/578798
http://www.fundisom.com/owned/warning
http://securitytracker.com/id?1010167
http://secunia.com/advisories/11622/
http://lists.apple.com/mhonarc/security-announce/msg00053.html
http://archives.neohapsis.com/archives/fulldisclosure/2004-05/0837.html