Major Vulnerability discovered in Bash

There is an easy way to find out whether your system is vulnerable. You can simply check your system from a command line by typing:

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

If the system is vulnerable, the output will be:

vulnerable this is a test

If you run the above example with the patched version of Bash, you should get an output similar to:

$ 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

Update to a patched version immediately!