From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tonnerre <tonnerre@thundrix.ch>
Subject: Re: The argument for fs assistance in handling archives (was: silent semantic changes with reiser4)
Date: Mon, 6 Sep 2004 09:56:03 +0200
Message-ID: <20040906075603.GB28697@thundrix.ch>
References: <20040826150202.GE5733@mail.shareable.org> <200408282314.i7SNErYv003270@localhost.localdomain> <20040901200806.GC31934@mail.shareable.org> <Pine.LNX.4.58.0409011311150.2295@ppc970.osdl.org> <1094118362.4847.23.camel@localhost.localdomain> <20040902203854.GA4801@janus>
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Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, Linus Torvalds <torvalds@osdl.org>,
	Jamie Lokier <jamie@shareable.org>,
	Horst von Brand <vonbrand@inf.utfsm.cl>,
	Adrian Bunk <bunk@fs.tum.de>, Hans Reiser <reiser@namesys.com>,
	viro@parcelfarce.linux.theplanet.co.uk,
	Christoph Hellwig <hch@lst.de>, linux-fsdevel@vger.kernel.org,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Alexander Lyamin aka FLX <flx@namesys.com>,
	ReiserFS List <reiserfs-list@namesys.com>
Return-path: <reiserfs-list-return-21495-reiserfs=m.gmane.org@namesys.com>
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To: Frank van Maarseveen <frankvm@xs4all.nl>
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Salut,

On Thu, Sep 02, 2004 at 10:38:54PM +0200, Frank van Maarseveen wrote:
> Can it do this:
>=20
> 	cd FC2-i386-disc1.iso
> 	ls
>=20
> or this:
>=20
> 	cd /dev/sda1
> 	ls
> 	cd /dev/floppy
> 	ls
> 	cd /dev/cdrom
> 	ls
>=20
> ?

Actually                  I                  see                  some
small-security-hole-you-can-drive-a-big-yellow-truck-with-flashes-on-through
problem.

$ cat fs_header owner_root flags_with_suid evil_program > evil.iso
$ ls -l evil.iso/evil_program
-rwsr-xr-x    1 root     root           24 2003-11-09 16:41 evil.iso/evil_p=
rogram
$ evil.iso/evil_program
Mwahaha, I got root!
Copy-right violating IP... done.
Hijacking administrators wife... done.
Overwriting OS with Parachute 2010... done.

etc. pp.

			    Tonnerre

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