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Date:      Sun, 10 Aug 1997 15:51:54 +0200 (CEST)
From:      Eivind Eklund <perhaps@yes.no>
To:        Brian Mitchell <brian@firehouse.net>
Cc:        bugtraq@netspace.org, freebsd-security@FreeBSD.ORG
Subject:   Re: procfs hole
Message-ID:  <199708101351.PAA04930@bitbox.follo.net>
In-Reply-To: Brian Mitchell's message of Sun, 10 Aug 1997 05:37:40 -0400 (EDT)
References:  <Pine.NEB.3.96.970810052824.3287A-100000@apocalypse.saturn.net>

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> 
> There is a major hole in procfs under FreeBSD 2.2.1 (2.1 is not affected,
> I have not tested 3.x but I believe it to be vulnerable as well) along
> with OpenBSD (not tested by me, but by someone else -- believe it was
> 2.1-RELEASE although obsd doesnt mount procfs by default like freebsd
> does).

Temporary fix: Disable the /proc filesystem.  Setting ro instead of rw in
/etc/fstab or chmod'ing on the mountpoint do _not_ work.

Eivind,
looking for a proper fix, but not expecting to get there before David.



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