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Date: Wed, 28 Jan 2009 15:54:59 +0100
From: Thomas Biege <thomas@...e.de>
To: oss-security@...ts.openwall.com
Cc: coley@...re.org
Subject: Re: update on CVE-2008-5718
Hi,
On Wed, Jan 28, 2009 at 09:02:45AM -0500, Steven M. Christey wrote:
>
> On Wed, 28 Jan 2009, Thomas Biege wrote:
>
> > New patch attached, the old one was missing spaces.
> > Hope the blacklist is complete now...
>
> Would a "-" character allow an argument injection attack by inserting
> dangerous command-line switches? Things like being able to add a "-rf" as
> an argument to the rm command...
I was thinking about that case too but it might not work because we escape
the space.
> I assume there's something undesirable about quoting everything unless
> it's alphanumeric?
... I think I'll rewrite it and post it here again.
Replacing popen() is still my prefered solution....
--
Bye,
Thomas
--
Thomas Biege <thomas@...e.de>, SUSE LINUX, Security Support & Auditing
SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nuernberg)
--
Hamming's Motto:
The purpose of computing is insight, not numbers.
-- Richard W. Hamming
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