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Date:      Tue, 24 Jul 2001 19:33:39 +0100
From:      Ben Smithurst <ben@FreeBSD.org>
To:        Jon Loeliger <jdl@jdl.com>, security@freebsd.org
Subject:   Re: Security Check Diffs Question
Message-ID:  <20010724193339.H20105@strontium.shef.vinosystems.com>
In-Reply-To: <20010724212444.A19217@ringworld.oblivion.bg>
References:  <200107241632.LAA05639@chrome.jdl.com> <20010724205228.A16243@ringworld.oblivion.bg> <20010724190607.F20105@strontium.shef.vinosystems.com> <20010724212444.A19217@ringworld.oblivion.bg>

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Peter Pentchev wrote:

> 'Replacing' would not be enough - removing the file or moving something
> over it (the way install(1) does) would change its inode number.

I meant if they did something like

	cat my_trojan > /usr/bin/su

or whatever, which wouldn't change the inode number...

But...

> The ctime, too, can be changed,

=2E.. Never mind then. :-( Maybe /etc/security should be updated to do
stuff with mtree's md5/sha1 digest stuff...

--=20
Ben Smithurst / ben@FreeBSD.org                 FreeBSD: The Power To Serve
                                                    http://www.FreeBSD.org/

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