The specific flaw exists within the wholeText method of the Text element. When calculating the total size of all the text containing it, the application will wrap a 32-bit integer. The application will use this in an allocation and then later use a different value for populating the buffer. 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/HT4456
