Apple QuickTime before 7.5.5 on Windows allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted PICT image, related to an "invalid pointer issue."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15841
http://www.vupen.com/english/advisories/2008/2527
http://www.securityfocus.com/bid/31086
http://support.apple.com/kb/HT3027
http://securitytracker.com/id?1020841
http://secunia.com/advisories/31821
http://lists.apple.com/archives/security-announce//2008/Sep/msg00000.html