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- Newsgroups: comp.unix.sysv386
- Subject: Re: Single-user mode boot on SCO UNIX - not a solution
- From: chap@art-sy.detroit.mi.us (j chapman flack)
- Date: Thu, 03 Sep 92 23:45:33 GMT
- Message-ID: <9209031945.aa08712@art-sy.detroit.mi.us>
- Reply-To: chap@art-sy.detroit.mi.us (j chapman flack)
- Path: sparky!uunet!wupost!gumby!destroyer!fmsrl7!art-sy!news
- Organization: Appropriate Roles for Technology
- References: <syscrc.714768938@gsusgi1.gsu.edu>
- <1992Aug25.195455.1065@ksvltd.fi>
- <1992Aug28.201249.29451@smallo.bo.open.de>
- <la63o2INN3cg@neuro.usc.edu>
- Lines: 22
-
- In article <la63o2INN3cg@neuro.usc.edu> merlin@neuro.usc.edu (merlin) writes:
- >A small nit - UNIX was not originally to be secure. Early UNIX systems
- >were designed to encourage open access and sharing of information. The
- >paranoid defensive application of system security controls did not come
-
- This characterization is perhaps a little extreme. Thompson and Ritchie's
- '74 UNIX paper in CACM did devote nearly half a page to protection issues,
- including assurances that a set-uid program can obtain the real ID of its
- invoker, and that the security mechanisms provided were sufficient to solve
- a sample problem that had been posed in '71.
-
- UNIX was never designed to be *multilevel* secure, and lacked audit facilities,
- but the designers certainly did intend to keep Joe out of Bill's files (subject
- to Bill's discretion) and to keep Joe and Bill from wiping out the system.
- Its fundamental mechanisms for doing that have been pretty sound from the
- get-go, though numerous weak spots have appeared through the sometimes-reckless
- accretion of new kernel features and set-uid utilities. Same old story....
- --
- Chap Flack Whatever was required to be done, the Circumlocution
- chap@art-sy.detroit.mi.us Office was beforehand with all the public departments
- in the art of perceiving--HOW NOT TO DO IT. -Dickens
- Nothing I say represents Appropriate Roles for Technology unless I say it does.
-