If you are not checking or keeping your system current and patched with updates, I strongly suggest you do so.
The likelihood that your workstation will be used for some sort of direct attack especially if you are behind a firewall and practice safe computing is pretty unlikely, but its better to be safe than sorry.
Please update your system using your preferred method. If you are using wattOS as a server, then you really need to update (as all Linux servers need to). Below is a great link that outlines all this and gives you some good information for testing and whats going on about this bug.
https://www.digitalocean.com/community/tutorials/how-to-protect-your-server-against-the-shellshock-bash-vulnerabilityAdditionally if you use various technologies and or are responsible for them, I have posted an update on my personal blog also you can review here..
http://cpufu.com/shellshock-and-some-information/
