Solving tech problems

Hot to check if your Linux server is vulnerable regarding the BASH bug?

System Administration

Just type this command in your SSH shell $ env x='() { :;}; echo vulnerable’ bash -c ‘echo hello’ If you got this output then you are safe: bash: warning: x: ignoring function definition attempt bash: error importing function definition for `x’ hello If you got this output then you are vulnerable and need to update: vulnerable Here is the tutorial how to do it: https://brew.sh/

Protecting your Linux server from Heartbleed bug

System Administration

I have got at least 20 emails from different sources about OpenSSL vulnerability, known as Heartbleed bug It allows anyone on the Internet to read the memory of the systems protected by the vulnerable versions of the OpenSSL software. More details about this (how to reproduce and fix) can be found here. To check if your server is vulnerable use this online tool. At the end, in order to protect your server’s Linux OS you need to do this few steps: Login through SSL (you can use Putty from Windows)…read more