linux init=/bin/sh .... that's what i've done the one time someone change
root passwd on me
----------
> From: Bart Hartgers <barth@stack.nl>
> To: linux-kernel@vger.rutgers.edu
> Subject: Re: Single user mode
> Date: Wednesday, January 15, 1997 7:16 AM
>
> At a certain point in time&space, daniel riek wrote:
> >
> > Hi!
> >
> > George B. Winston IV wrote:
> > >
> > > Sorry for the lame question, but I think my system was hacked and all
> > > of the passwords changed. I can't even log-in as root.
> > >
> > > Is it possible to boot in single user mode and change root's
> > > password? If so, How do you boot in single user mode and change
> > > root's password.
> > That seems to depend on the Distrib. you installed. In general every
> > boot-prompt-option, that lilo and the kernel don't understand, is
passed
> > to the Process with Id 1 (Init). And Init takes the runlevel to start
> > with, as an argument. So on Redhat 4 (SysV-like-Init) it's possible to
> > start in single-user-mode with:
> >
> > lilo>linux 1
> >
> >
> > Besides this is a major security hole, as it is much easier and faster
> > to hack a linux-box via this trick, than by using an boot-/root-disk.
> >
> > Greetings, Daniel
> > ---
> >
> What security hole? It requires physical access to the console. At the
> console, you can also (pick 1 or all 5)
> - shutdown/reboot the machine
> - switch off
> - open the box
> - take out everything
> - switch on again :-)
>
> If you give potential hackers access to the machine, all bets are off
with
> any kind of machine, except maybe a large block of concrete.
>
> Bart
>
> --
> // Bart Hartgers <bart@oke.nl> <A.Hartgers@stud.tue.nl>
<barth@stack.nl>
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