Re: early Trojan Horse

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#768

From: Kevin Walsh
Date: Thu, 19 Nov 1992 15:15

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In article <1992Nov18.202710.9652@mcs.kent.edu> keithf@Nimitz.mcs.kent.edu (Keith Fuller) writes:
>
> I heard that early UNIX systems came with a Trojan Horse.
> As I remember, the C compiler would compile one of the utilities
> in a way that would give a knowledgable person entry into any UNIX
> system.
> 
> Does anyone know anything about this?
> Like some other people who are asking such questions,
> I am indeed writing a term paper on UNIX security.
> 
As I remember it, cc used to recognize a peice of code as being
from the login program.  When you compiled login, the resulting
executable would have a back door login in it.

You could log in as "bell" and get in as root.

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  _/_/_/   _/_/      _/    _/    _/    _/_/  _/     K e v i n  W a l s h
 _/ _/    _/          _/ _/     _/    _/  _/_/      kev@dsbc.icl.co.uk
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Message-ID: <956@dsbc.icl.co.uk>

Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!uknet!dsbc!kev

References: <1992Nov18.202710.9652@mcs.kent.edu>

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Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!uknet!dsbc!kev
From: kev@dsbc.icl.co.uk (Kevin Walsh)
Newsgroups: comp.security.misc
Subject: Re: early Trojan Horse
Message-ID: <956@dsbc.icl.co.uk>
Date: 19 Nov 92 15:15:03 GMT
References: <1992Nov18.202710.9652@mcs.kent.edu>
Organization: Cursor Software Limited, London, England
Lines: 22

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