Multiple buffer overflows in Apple QuickTime before 7.7.3 allow remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted style element in a QuickTime TeXML file.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16121
https://exchange.xforce.ibmcloud.com/vulnerabilities/79899
http://www.securityfocus.com/bid/56557
http://support.apple.com/kb/HT5581
http://secunia.com/advisories/51226
http://lists.apple.com/archives/security-announce/2012/Nov/msg00002.html