Thursday, September 25, 2014

Bash Shell flaw makes Linux and Mac OS X to attack

A new bug is found in the Bash shell which makes it open to attack. Machines running in Linux  and Mac OS X are vulnerable to this attack. Researchers have discovered a flaw in the Unix command shell (bash) that lets attackers run any code they want as soon as the shell starts running so that they can get control of any internetworked devices and web servers which runs bash command, they can remotely acess your system. Android phones are not vulnerable because they use a Bash alternative (Almquist shell).

 Patches are availabe online to get updated and be error free from this 'bash' vulnerability. Linux varients ( Redhat, Debain etc. ) are providing update to this flaw. You can check if your system is vulnerable or not by using this code in your terminal.

 env x='() { :;}; echo vulnerable' bash -c 'echo this is a test'

 If it returns the word "vulnerable" then your system is Vulnerable. If its says so Don't get worried. Just update your OS, the vulnerability will be removed.



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