[OT Security PSA] Shellshock: Update your bash, now!

[Kagamin via Digitalmars-d-announce]

On Wednesday, 1 October 2014 at 05:09:45 UTC, Nick Sabalausky 
wrote:
> Apparently bash has it's own "heartbleed" now, dubbed 
> "shellshock".

Does it affect dash?
Also, how does one update software on linux? Last I checked, when 
new version is out, repository of the previous version becomes 
utterly abandoned. A pity, on windows one can roll new software 
versions as long as they are maintained.