Security issues – Shellshock
In this era of almost everything being online, online security is a major concern. Nowadays, many web servers, web-connected devices, and services use Linux as their platform. Most versions of Linux use the Unix bash shell so that the Shellshock vulnerability can affect a huge portion of websites and web servers.
In the previous recipe, we understood the details about Shellshock vulnerability. Now, we will understand how this bug can be exploited through SSH.
Getting ready
To exploit Shellshock vulnerability, we need two systems. The first system will be used as the victim's, and should be vulnerable to Shellshock. In our case, we are using an Ubuntu system as the vulnerable system. The second system will be used as the attacker, and can have any Linux version running on it. For our case, we are running Kali on the second system.
The victim system will be running the openssh-server package. It can be installed using the following command:
apt-get install openssh-server...
