Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!ames!haven!mimsy!nocusuhs!nmrdc1!minixug!waltje
From: waltje@minixug.mugnet.org (Fred 'The Rebel' van Kempen)
Newsgroups: comp.os.minix
Subject: Re: MINIX Security
Message-ID: <9103303877@minixug.mugnet.org>
Date: 30 Mar 91 15:50:35 GMT
References: <53.27E71F95@keeper.sublink.ORG>
Organization: MINIX User Group Holland (NLMUG)   -  MUGNET  -
Lines: 14

bergonz@keeper.sublink.ORG (Michele Bergonzoni) wrote:
> 
>  > it should be possible to write an assembler program which hunts around 
>  > for the kernel's process table, figures out what's where, and manually 
>  > changes its uid to 0.  Practically, this might be quite messy.
> 
> Really not! I've seen such a program working on commercial, AT&T-licensed  
> versions of UNIX !!!
> Ciao
Close to impossible on any machine that supports protected mode.  On a simple
286, it is IMPOSSIBLE to junk around in segments not belonging to the current
process...: Memory fault- core dumped !   :-) ^100

Fred.