(Pwn2Own) Apple OS X libATSServer Heap-based Buffer Overflow Remote Code Execution Vulnerability

This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Apple OS X. 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 GetUncompressedBitmapRepresentation method. The issue lies in the failure to properly validate the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute arbitrary code under the context of the user.