Article View: comp.security.misc
Article #289Re: Beta testers needed for security tool
From: Paul A. Karger
Date: Tue, 08 Sep 1992 16:41
Date: Tue, 08 Sep 1992 16:41
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In article <WESOMMER.92Sep7144915@bill-the-cat.mit.edu>, wesommer@mit.edu (Bill Sommerfeld) writes: |> In article <18g4c7INNihj@matt.ksu.ksu.edu> holland@matt.ksu.ksu.edu (Rich Holland) writes: |> |> Ross Ridge <ross@zooid.guild.org> writes: |> |> >While this would be what I'd do, even this isn't 100% guaranteed if |> >someone has broken security on the machine. It's possible, for instance, |> >that the mount command, shell or even kernel has been hacked to prevent |> >tripwire from doing it's job properly. |> |> *shaking head* Man, some people can get just a LITTLE too paranoid! |> |> ... |> |> ...some people need a better sense of reality! |> |> You're one of them :-) |> |> For the record, there have been a number of instances of break-ins on |> the Internet involving hacked operating systems software.. typically |> /bin/login and/or telnet and/or telnetd. |> |> Hacking the shell isn't too much harder than hacking any other |> user-mode program. |> |> It's a *lot* harder to replace write-protected boot media in a locked |> cabinet through the network. |> |> Multics, one of the most usable of secure systems (and most secure of |> usuable systems), was always booted from a write-protected *tape*, |> which contained the boot loader, kernel-equivalent, shared libraries, |> and critical commands. |> -- And even Multics fell victim to a hacked shell at one point in its life. I recall a case back in '69 or thereabouts when one of the system administrators was given a hacked shell that displayed a convincing error message and then hung up the modem. That administrator spent several days looking for a system bug, before discovering the hacked shell. Just because you're paranoid, DOESN'T mean that they aren't out to get you, anyway!
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Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!spool.mu.edu!think.com!paperboy.osf.org!osf.org!karger From: karger@osf.org (Paul A. Karger) Newsgroups: comp.security.misc,alt.security,alt.sources.d,comp.sources.testers,comp.unix.admin Subject: Re: Beta testers needed for security tool Message-ID: <1992Sep8.164108.1617@osf.org> Date: 8 Sep 92 16:41:08 GMT References: <18e5kgINNkpf@matt.ksu.ksu.edu> <Bu6r2q.AG5@mentor.cc.purdue.edu> <WESOMMER.92Sep7144915@bill-the-cat.mit.edu> Sender: news@osf.org (USENET News System) Organization: Open Software Foundation Lines: 43