Apple WebKit innerHTML element Substitution Remote Code Execution Vulnerability

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. The specific flaw exists in the WebCore’s HTMLObjectElement::renderFallBackContent() method. By rewriting an HTML element via the document’s innerHTML() method a memory corruption occurs resulting from a call-after-free. This can be leveraged to execute arbitrary code under the context of the current user.