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 how the application parses the atom hierarchy within a QuickTime movie file. In a certain situation the application will pass execution to another function for handling the atom, however, will pass the incorrect number of arguments. Due to this, a variable will be treated as a pointer. This can lead to code execution under the context of the application.
Patch Availability:
Apple has issued an update to correct this vulnerability. More details can be found at: http://support.apple.com/kb/HT5002
