Apple Safari Array Indexing Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of 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 handling of JSArray objects. The issue lies in the usage of a custom sort comparison function. By manipulating a JSArray object an attacker can force controlled memory to be accessed. An attacker can lever this vulnerability to execute code under the context of the current process.