News & Public Relation > Security Update

Fixed shellshock Bug in linux base system bash exploit

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Nick:
Affected distributions include:

Red Hat Enterprise Linux (versions 4 through 7)
Fedora
CentOS (versions 5 through 7)
CloudLinux
Debian


To test your system for the exploit, you can run this command from shell:


--- Quote ---$ env x='() { :;}; echo vulnerable' bash -c "echo this is a test"
vulnerable
this is a test
--- End quote ---


Most linux distributions have issued a fix, and for Redhat, CloudLinux and CentOS systems you can run yum update which will bring down the updated version of Bash.


--- Quote ---yum update bash
--- End quote ---

Your system is no longer vulnerable if the above test returns this:


--- Quote ---$ env x='() { :;}; echo vulnerable' bash -c "echo this is a test"
bash: warning: x: ignoring function definition attempt
bash: error importing function definition for `x'
this is a test
--- End quote ---


refer: http://ventraip.com.au/blog/announcements/bug-in-linux-bash-causes-shellshock-update-required/

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