By now, you’ve probably seen this magic incantation, or variations, sent all around as a quick test for vulnerability to CVE-2014-6271, known as “Shellshock”, because in this post-Heartbleed world, apparently all security flaws will have cute over-dramatic names. env x='() { :;}; echo OOPS' bash -c : This will print “OOPS” on a vulnerable system, but exit silently if bash has been patched. And you
![Shellshock: How does it actually work? - Fedora Magazine](https://cdn-ak-scissors.b.st-hatena.com/image/square/3242ad038bcd146ee116c9cefd05b6b0d9e8661b/height=288;version=1;width=512/https%3A%2F%2Ffedoramagazine.org%2Fwp-content%2Fuploads%2F2014%2F09%2Fshellshock-small.png)