Re: [Full-disclosure] Linux + bash and a silver fork

[liquidfish <liquidfish@xxxxxxxxx>]

I hope fork bombs aren't coming as news or a surprise to anyone on this list
as they are neither new nor surprising. Check out limits.conf for a way to
limit the impact of such an attack (restrict the DoS to a single user
account or service rather than the entire system)

On 8/27/07, Niko Lilja <niko.lilja@xxxxxxxxx> wrote:
>
> Well, as has been said when you realize the truth that there is no spoon,
> but instead there'll be a
> bunch of forks instead, at least in linux on bash shell, tested ubuntu and
> RHEL this far.
>
> By throwing a nice piece of line code as a command in bash shell (normal
> user) you can pretty much
> crash the whole server cause denial of service by giving a command in
> bash:
>
> :() { :&:; } ;:
>
>
> Almost as the ascii would be smiling..
>
> - N
>
>
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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/