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Date: Tue, 22 Jan 2013 08:25:23 +0100
From: Sebastian Krahmer <krahmer@...e.de>
To: oss-security@...ts.openwall.com
Cc: Vincent Danen <vdanen@...hat.com>
Subject: Re: CVE Request coreutils

Hi,

Generally, I see your point. However sometimes services running as
root 'sort' or 'uniq' user input e.g. via grepping logfiles etc,
so there is indeed a real chance to indirectly trigger a privilege 
escalation. The past shows that segfaults can be turned into a 
code exec often. Its a stack overflow after all.

regards,
Sebastian


On Mon, Jan 21, 2013 at 06:33:07PM -0700, Kurt Seifried wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
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> 
> On 01/21/2013 01:39 PM, Vincent Danen wrote:
> > * [2013-01-21 19:17:49 +0100] Moritz Muehlenhoff wrote:
> > 
> >>> Can someone assign a CVE id for a buffer overflow in
> >>> coreutils? Its the same code snippet (coreutils-i18n.patch) and
> >>> it affects sort, uniq and join:
> >>> 
> >>> https://bugzilla.novell.com/show_bug.cgi?id=798538 
> >>> https://bugzilla.novell.com/show_bug.cgi?id=796243 
> >>> https://bugzilla.novell.com/show_bug.cgi?id=798541
> >> 
> >> Could you send the faulty patch to the list so that distros can
> >> validate that they don't include it themselves?
> > 
> > Red Hat/Fedora do include this patch, so it's more than just SUSE
> > that ships them.  However, when I was looking at them last week,
> > this struck me as just a non-exploitable crash and unless I'm
> > missing something, I think it would be quite the stretch to call it
> > a security flaw.
> 
> Agreed, there is no significant impact of exploitation and there is no
> real easy way to trick a victim into doing this (and even if you do,
> so what? now if it was code exec we might be talking about something
> interesting).
> 
> - -- 
> Kurt Seifried Red Hat Security Response Team (SRT)
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-- 

~ perl self.pl
~ $_='print"\$_=\47$_\47;eval"';eval
~ krahmer@...e.de - SuSE Security Team

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