Fixing Shellshock vulnerability in Ubuntu

These days we have heard about the Shellshock vulnerability that affects to many unix based OSs. Well, of course Linux is among them so it’s affected.

The first step is to check if you Linux (Ubuntu) version is affected, so in order to make a quick test open a terminal and run thefollowing commands (3 in total):


env X='() { :;}; echo' /bin/cat /etc/passwd; echo 'Welcome to he Simple ShellShock Tester By Svieg';echo 'Your infos are at risk';


env x='() { :;}; echo Your system is vulnerable update ASAP' bash -c "echo Visit for update info"

env X='() { (a)=>\' bash -c "echo date"

If for some reason any of the commands return the text saying that the computer is vulnerable or in the 3rd one you get the date instead of an error message, then your computer is in risk.

Ubuntu has fixed the problem the 25th of September, so expect fixing the problem with the typical:

sudo apt-get update; apt-get upgrade