Unfortunate dynamic linking for everything
david at catwhisker.org
Sun Nov 23 19:43:33 PST 2003
>Date: Mon, 24 Nov 2003 09:34:08 +0600 (NOVT)
>From: "Maxim M. Kazachek" <stranger at sberbank.sibnet.ru>
> So, imagine, i'm accidentally deleted /bin with your most wanted
>static sh... And, of course, due to static nature of /bin/sh it was
>removed from /rescue? Nothing will protect you from shooting in the leg,
>neither static linking, nor assumption that /lib is OK.
So go ahead and make /bin/sh also have a (hard) link to /rescue/sh.
Then the referenced action merely decrements the link count, and the
executable itself doesn't go away.
Sure, you could be more imaginative with foot-shooting, but the stated
problem is really easy to avoid.
david (reluctant to contribute to this thread....)
David H. Wolfskill david at catwhisker.org
If you want true virus-protection for your PC, install a non-Microsoft OS
on it. Plausible candidates include FreeBSD, Linux, NetBSD, OpenBSD, and
Solaris (in alphabetical order).
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