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."
http://lists.apple.com/archives/security-announce//2008/Sep/msg00000.html
http://secunia.com/advisories/31821
http://securitytracker.com/id?1020841
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15841