Heap-based buffer overflow in Apple iTunes before 10.6.3 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted .m3u playlist.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17016
http://lists.apple.com/archives/security-announce/2012/Jun/msg00000.html