Date: Mon, 22 Oct 2007 18:25:13 -0400
From: Bill Moran <wmoran@potentialtech.com>
To: Martin Tournoij <carpetsmoker@xs4all.nl>
Cc: freebsd-questions@freebsd.org, laszlo.danielisz@gmail.com
Subject: Re: defend from -> :() { :&:; } ;:
Message-ID: <20071022182513.985c6428.wmoran@potentialtech.com>
In-Reply-To: <20071022164418.GA864@glitch.rwxrwxrwx.net>
References: <123275.56819.qm@web30812.mail.mud.yahoo.com> <20071022164418.GA864@glitch.rwxrwxrwx.net>
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In response to Martin Tournoij <carpetsmoker@xs4all.nl>:
> On Sun 21 Oct 2007 12:10, Danielisz Laszlo wrote:
> > Please do not try to execute this: :() { :&:; } ;: on your BSD machine.
> > I ask all who already tried it how to defend from this?
>
> Wow,, my machine just crashed :-/
> Does in this work on other OS's as well (ie. GNU/Linux)? Or just
> (Free?)BSD? I really don't feel like crashing another machine right
> now...
It's a fork bomb. It affects every OS that has fork() or equivalent.
> Only works in sh, not in csh.
No, it works in csh, the syntax is different.
> Anyway, this seems to be security/stability issue, maybe a PR is in
> order?
No. Research (on your point) into fork bombs and how to configure
the system to handle them properly is in order.
--
Bill Moran
http://www.potentialtech.com
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