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From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: Matthew Seaman <matthew@FreeBSD.org>
Subject: Re: FreeBSD Security Advisory FreeBSD-SA-14:07.devfs
References: <CAHQQXOM_OBzsiLLxtUTFY1KQNAftz-GRQv3tV6zD3iENt9+jcg@mail.gmail.com>
 <536147DE.5030703@delphij.net> <53614D16.9060206@FreeBSD.org>
Date: Fri, 02 May 2014 12:02:39 +0200
In-Reply-To: <53614D16.9060206@FreeBSD.org> (Matthew Seaman's message of "Wed, 
 30 Apr 2014 20:20:54 +0100")
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Cc: Corey Smith <corsmith@gmail.com>, freebsd-security@freebsd.org,
 d@delphij.net
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Matthew Seaman <matthew@FreeBSD.org> writes:
> You can start snmpd with the '-r' flag which means it will at least run
> without needing access to /dev/mem or anything else privileged, but at
> the cost of reduced functionality.  For instance the 'proc foo' test to
> check on the presence of a foo process doesn't work.  Quite why that
> should need rootly privilege I do not know: it's effectively the same as
> grepping the output of 'ps -acx'.

It probably uses libkvm instead of the newer libprocstat, which does not
require access to /dev/mem.  The only reason you'd ever want to use
libkvm is if you want to be able to operate on kernel dumps.

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no