The Installer in Apple Safari before 4.0 on Windows allows local users to gain privileges by checking a box that specifies an immediate launch of the application after installation, related to an unspecified compression method.
https://exchange.xforce.ibmcloud.com/vulnerabilities/51290
http://www.securityfocus.com/bid/35339
http://support.apple.com/kb/HT3613
http://lists.apple.com/archives/security-announce/2009/jun/msg00002.html