*BSD News Article 20238


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From: tim@introl.com (Tim Chase)
Newsgroups: comp.os.386bsd.questions,comp.os.386bsd.bugs
Subject: Re: NETBSD 0.9 NFS AUTHENTICATION (not a problem in my case)
Date: 31 Aug 1993 09:57:40 -0500
Organization: Introl Corp.
Lines: 19
Distribution: world
Message-ID: <25vot4$b30@ss1.introl.com>
References: <25t7p9INN6lq@darkstar.ucsc.edu> <25tr3h$ade@ss1.introl.com>
NNTP-Posting-Host: ss1.introl.com

In article <25tr3h$ade@ss1.introl.com> I wrote:
>
>This is just a follow-on question regarding this, I don't have any answers
>(yet).  I just discovered that under 0.9 and 0.9-current I can't run
>xterms anymore that need to access the .Xauthority file via NFS.
>I have no Idea whether this worked under 0.8 or, for that matter,
>under 386BSD.  I'll whip up a test program shortly, but it sure seems
>like a suid-root program that changes its id to that of the original
>user can't access that user's private files over NFS.

After looking into this a bit further, it seems that NFS isn't the problem.
A setuid-root program that setuid's itself back to that of the original
user has no problem opening read-protected files owned by the original
user.


-- 
Tim Chase		           Introl Corp. Milwaukee, WI USA
Email: tim@introl.com		   Phone: +1 (414) 327-7171