This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Apple Quicktime Player. 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 parsing of ‘tkhd’ atoms found inside QuickTimeVR files. Improper validation of the transform matrix data results in a heap chunk header overwrite leading to arbitrary code execution under the context of the currently logged in user.