Date: Sat, 03 Mar 2001 01:41:04 -0700 From: Wes Peters <wes@softweyr.com> To: Alfred Perlstein <bright@wintelcom.net> Cc: Dan Phoenix <dphoenix@bravenet.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: easy way to crash freebsd Message-ID: <3AA0AE20.653196F8@softweyr.com> References: <Pine.BSO.4.21.0103021514400.27749-100000@gandalf.bravenet.com> <Pine.BSO.4.21.0103021521000.27749-100000@gandalf.bravenet.com> <20010302152553.H8663@fw.wintelcom.net>
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Alfred Perlstein wrote:
>
> > On Fri, 2 Mar 2001, Dan Phoenix wrote:
> >
> > > symbolic link /etc/resolv.conf
> > > to a non-existant file....throw a bunch of connections at it
> > > and watch it reboot.
>
> * Dan Phoenix <dphoenix@bravenet.com> [010302 15:24] wrote:
> >
> > People asking me how this could be used as a local user.
> > Well i guess if you wanted to you could find something root runs
> > that writes to /tmp then umask resolv.conf
> > and echo "" > resolv.conf
> >
> > I am in no way supporting that...just answering a question.
>
> Try overwriting /dev/mem, it's much more interesting.
You don't even have to overwrite it some times. Accessing word-size-only
registers in memory a byte at a time can cause a bus error and panic...
--
"Where am I, and what am I doing in this handbasket?"
Wes Peters Softweyr LLC
wes@softweyr.com http://softweyr.com/
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