Zero Day Initiative Advisory 10-257 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Webkit. 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 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.
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