The Bash “Shellshock” bug is used to spread malware using botnets. To make sure that you can prevent your system against Shellshock exploit make sure that your system is up to date. Once you update your system use below vulnerability test to help you find out whether your system is vulnerable to Bash Shellshock attacks.
Simply open a terminal on your Linux system and execute the following linux command
$ env i='() { :;}; echo Your system is Shellshock vulnerable' bash -c "echo Shellshock Linux system vulnerability test"
If your system is vulnerable to the Bash “Shellshock” bug the above command will produce a following output:
Your system is Shellshock vulnerable Shellshock Linux system vulnerability test
otherwise you will see a following message:
Shellshock Linux system vulnerability test
