In other news, I've recently found a script for Greasemonkey or Tampermonkey called "Simple Video Audio Blocker. Since it runs on both and Greasemonkey and Tempermonkey, it doesn't need any particular browser.
That said, Simple Video Audio Blocker could probably be used to avoid executing Flash Player applets, which will offer protection against exploits like these. It can also prevent unwanted playback of HTML5 videos.
Or you could just disable (or uninstall) Flash Player. That would protect you even more.