Security researcher Aviv Raff used an existing flaw in Microsoft's internet explorer in the exploit, which was demonstrated to tech journalists.
IDG News Service tested Raff's demonstration attack code, which runs Windows Calculator on a victim's system. For the attack to work, a victim must first visit a maliciously crafted Web page with the Safari browser, which in turn will trigger the carpet bombing attack and exploit the IE flaw.
The flaw, which was originally reported the IE flaw to Microsoft more than a year ago, is rated as a moderate vulnerability, as is that of Safari. When combined however, they produce a critical flaw which allows remote code execution.