... until Mozilla can ship an update to quash this bug, Security Fix is posting instructions to help readers protect themselves from this vulnerability.~~snip~~ Fortunately, there is a relatively easy fix for this that can be reversed once Mozilla issues a patch. To disable the vulnerable component, open up a new Firefox window and type "about:config" (without the quotes) in the browser's address bar. In the "filter" box, type "jit" and you should see a setting called "javascript.options.jit.content". You should notice that beside that setting it reads "true," meaning the setting is enabled. If you just double-click on that setting,...