Microsoft's Security Response Center posted a link to the patch on its website today. The page states:
This easy, one-click Fix it is available to everyone and prevents the vulnerability from being used for code execution without affecting your ability to browse the Web. Additionally, applying the Fix it does not require a reboot. While we have still observed only a few attempts to exploit this issue, we encourage all customers to apply this Fix it to help protect their systems.
Microsoft adds that the company is still working on releasing a full security update that will plug up the exploit once and for all, but there is no word on when this update will be released.