oss-security - Re: incorrect upstream fix for CVE-2009-0840 (mapserver)

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Date: Mon, 22 Jun 2009 15:46:28 +0200
From: Nico Golde <oss-security+ml@...lde.de>
To: oss-security@...ts.openwall.com
Cc: aboudreault@...gears.com, coley@...re.org, 523027@...s.debian.org,
	warmerdam@...ox.com
Subject: Re: incorrect upstream fix for CVE-2009-0840 (mapserver)

Hi,
* Nico Golde <oss-security+ml@...lde.de> [2009-06-22 15:45]:
[...] 
> Unfortunately this doesn't fix the issue and I wonder why people always think
> changing signed types to unsigned will fix such errors.
> If I pass 0xffffffff as the content-length according to type conversion rules
> in C atoi() will convert this to -1 which is again converted to 0xffff when
                                                            0xffffffff^^
-- 
Nico Golde - http://www.ngolde.de - nion@...ber.ccc.de - GPG: 0xA0A0AAAA
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