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Article View: comp.security.misc
Article #175

Re: root-owned world-writable files

#175
From: Thomas Sippel - Dau
Date: Thu, 23 Jul 1992 16:52
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In article <14htt0INNiep@hilbert.math.ksu.edu>, tar@math.ksu.edu (Tim Ramsey) writes:
 -- How do you get a complete list of files that are trusted by root, or by
 -- programs that root trusts (that is, are setuid root)?
 -- 
 -- Much easier to simply not have world-writable files owned by root.

So does that mean we should cease to make /tmp world-writeable ? 
It certainly would induce people to stick closer to POSIX :-)

Otherwise, I disagree, world writeable files are not a security problem,
inappropriate use of information in files is the problem. It is also a
problem that people try to deduce the contents of files from the file names.
Unfortunately this is very deeply embedded in unix, or rather in the 
common usage that is made of unix facilities.

I seems however that the management problem that the use of filename 
'constants' (like /etc/passwd for the password file) gives people will
be felt before the security problem.

                                        Thomas

-- 
*** This is the operative statement, all previous statements are inoperative.
*   email: cmaae47 @ cc.ic.ac.uk (Thomas Sippel - Dau) (uk.ac.ic.cc on Janet)
*   voice: +44 715 895 111 x4937 or 4934 (day), or +44 718 239 497 (fax)
*   snail: Imperial College Center for Computing Services, Kensington SW7 2BX
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Message-ID: <1992Jul23.175225.11788@cc.ic.ac.uk>
Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!uknet!icdoc!cc.ic.ac.uk!carrion.cc.ic.ac.uk!vulture
References: <62524@cup.portal.com> <1992Jul21.201056.662@newshost.lanl.gov> <14htt0INNiep@hilbert.math.ksu.edu>

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Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!uknet!icdoc!cc.ic.ac.uk!carrion.cc.ic.ac.uk!vulture
From: vulture@carrion.cc.ic.ac.uk (Thomas Sippel - Dau)
Newsgroups: comp.security.misc
Subject: Re: root-owned world-writable files
Message-ID: <1992Jul23.175225.11788@cc.ic.ac.uk>
Date: 23 Jul 92 16:52:25 GMT
References: <62524@cup.portal.com> <1992Jul21.201056.662@newshost.lanl.gov> <14htt0INNiep@hilbert.math.ksu.edu>
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