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 during the rendering of an audio stream utilizing QDesign's audio codec. The application will perform an allocation utilizing a field specified in the sample's description. Later when initializing the buffer, the application will utilize a different length. If the lengths differ, then a buffer overflow will occur. This can lead to code execution under the context of the currently logged in user.
Patch Availability:
Apple has issued an update to correct this vulnerability. More details can be found at:
http://support.apple.com/kb/HT4104
