Apple QuickTime stsz Atom Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple QuickTime. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of the stsz atom. By providing a malicious value inside of the stsz atom, an attacker is able to influence the destination of a data write. An attacker could use this vulnerability to execute arbitrary code in the context of the viewing user.