Bash vulnerability

[ohjrson]

Ok I did this and this is what I got.

ohjrson@ohjrson-MS-6728:~$ env x='() { :;}; echo vulnerable' bash -c 'echo hello'
bash: warning: x: ignoring function definition attempt
bash: error importing function definition for `x'
hello
ohjrson@ohjrson-MS-6728:~$

What does all that mean? and what do I do now?
Ok just ran this: dpkg -s bash | grep Version
and got this: Version: 4.3-7ubuntu1.1

So That means I am good. Now is that what is installed with all of LL 2.0? Cause I just installed Beryl onto that other laptop Is that ok?

Thanks.