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Message-ID: <20141103202428.GA5775@zoho.com>
Date: Mon, 3 Nov 2014 20:24:28 +0000
From: mancha <mancha1@...o.com>
To: oss-security@...ts.openwall.com
Cc: Christian.Spieler@...nline.de
Subject: Re: unzip -t crasher
On Mon, Nov 03, 2014 at 11:05:43AM +0000, mancha wrote:
> This buggy code path is traversed when a ZIP archive has <<extra
> fields>> with blocks that are uncompressed (i.e. using the STORED
> method). A better solution than my last patch or malloc'ing max(),
> is returning an invalid compressed data error when size(compressed)!=
> size(uncompressed) for these cases. The attached patch does just that.
> Comments welcome.
>
> Cheers.
>
> --mancha
>
> PS I have been CC'ing Christian Spieler via the only email I could find
> online. I've not gotten bounces so it might still be active.
By the way, I've removed the original patch (unzip-6.0_overflow.diff)
from SF. Folks should use unzip-6.0_overflow2.diff instead:
http://sf.net/projects/mancha/files/sec/unzip-6.0_overflow2.diff
--mancha
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