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Date:      Thu, 5 Aug 1999 11:13:57 -0700 (PDT)
From:      John Polstra <jdp@polstra.com>
To:        mike@smith.net.au
Cc:        hackers@freebsd.org
Subject:   Re: login.conf restrictions for suid processes possible? (fwd) 
Message-ID:  <199908051813.LAA04237@vashon.polstra.com>
In-Reply-To: <199908051755.KAA13017@dingo.cdrom.com>

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In article <199908051755.KAA13017@dingo.cdrom.com>,
Mike Smith  <mike@smith.net.au> wrote:
> > 	I am working on some resource limit stuff and would like to be
> > able to use login.conf to restrict the number of cgi processes that
> > certain users can run. Unfortunately, the proprietary cgi product we use
> > is owned by root and suid's to the user who owns the script that it is
> > called to run. (This is not what I would call a "good idea," but it's what
> > I have to work with.)
[...]
> You need to pester the vendor to correctly switch limits when they 
> switch UIDs.
> 
> Alternatively, if this is unlikely _and_ the application is dynamically 
> linked, you could produce a library containing patched set*id functions 
> and force it into the app using LD_PRELOAD. 

N.B., LD_PRELOAD won't work if the program is setuid or setgid.  I'm
not 100% sure from the original post whether that's the case or not.

John
-- 
  John Polstra                                               jdp@polstra.com
  John D. Polstra & Co., Inc.                        Seattle, Washington USA
  "No matter how cynical I get, I just can't keep up."        -- Nora Ephron


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