There are two Common Vulnerability and Exposure CVE-2014-6271 and CVE-2014-7169
Akamai has posted it’s response
CERT has posted it’s vulnerability Note
Red Hat has developed the following test:
$ env x='() { :;}; echo vulnerable' bash -c "echo this is a test"
RedHat Blog also discusses it and has set up a FAQ
Updating Bash on various Linux or Unix systems may not be that easy. as discussed in this Bug-bash thread
But one can safely test as I did here:
As Johannes Ulrich has discussed in his blog entry yesterday this is not a simple potential vulnerability.
In my opinion, this bashcode problem is just starting to be felt as good exploits have yet to be developed.