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Date:      Tue, 11 Dec 2001 01:03:36 -0500
From:      Mike Barcroft <mike@FreeBSD.org>
To:        Paul Richards <paul@freebsd-services.com>
Cc:        Mike Silbersack <silby@silby.com>, Alfred Perlstein <bright@mu.org>, John Baldwin <jhb@FreeBSD.org>, mini@haikugeek.com, cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org
Subject:   Re: cvs commit: src/sys/boot/i386/loader version src/share/examp
Message-ID:  <20011211010336.Q1956@espresso.q9media.com>
In-Reply-To: <616630000.1008044969@lobster.originative.co.uk>; from paul@freebsd-services.com on Tue, Dec 11, 2001 at 04:29:29AM -0000
References:  <20011210201909.O92148@elvis.mu.org> <Pine.BSF.4.30.0112102122001.22013-100000@niwun.pair.com> <20011210221836.N1956@espresso.q9media.com> <616630000.1008044969@lobster.originative.co.uk>

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Paul Richards <paul@freebsd-services.com> writes:
> You need the superuser password to get to single user if the console is
> secure. The loader can be used to circumvent that now.

Interesting, I hadn't seen that before.  This is probably only useful
at preventing people that don't have an account on the system, and
don't have physical access to the harddisk, CD-ROM/DVD-ROM, or floppy
drives from gaining root.  To gain root from an account and console
access, one need only craft an init(8) and change the loader
init_path.

Perhaps a secure loader would be useful, such that it doesn't allow
interrupting.  Similar things could be done with the pre-loader boot,
but this write from loader feature seems so useful to me that I can't
imagine why we would want to turn it off by default, particularly
given the intrinsic insecurities of our current loader.

Best regards,
Mike Barcroft

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