Date: Fri, 30 Jul 1999 16:39:01 -0400 (EDT) From: "Brian F. Feldman" <green@FreeBSD.org> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: "Jordan K. Hubbard" <jkh@zippy.cdrom.com>, hackers@FreeBSD.org Subject: Re: So, back on the topic of enabling bpf in GENERIC... Message-ID: <Pine.BSF.4.10.9907301638300.6951-100000@janus.syracuse.net> In-Reply-To: <199907302037.NAA94153@apollo.backplane.com>
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On Fri, 30 Jul 1999, Matthew Dillon wrote:
> : But even if you turn off the bpf device, you still have /dev/mem and
> : /dev/kmem to worry about. For that matter, the intruder can still write
> : raw devices. Also, there is another kernel feature called kldload(8).
>
> BTW, I wrote this section because a hacker actually installed the bpf
> device via the module loader during one of the root compromises at BEST,
> a year or two ago. He had gotten it from a hackers cookbook of exploits
> which he convieniently left on-disk long enough for our daily backups to
> catch it :-).
Want to post the ocde for it? It would be interesting to see how that was
done!
>
> -Matt
>
>
>
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