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Message-ID: <20160504010039.GB2319@hunt>
Date: Tue, 3 May 2016 18:00:39 -0700
From: Seth Arnold <seth.arnold@...onical.com>
To: Brandon Dees <brandon@...tta.com>
Cc: oss-security@...ts.openwall.com
Subject: Re: ImageMagick Is On Fire -- CVE-2016-3714
On Wed, May 04, 2016 at 12:05:16AM +0000, Brandon Dees wrote:
> is it appropriate to ask if the same issues are present in GraphicsMagick
> as well?
I haven't investigated deeply but it seems very plausible to me:
Here's the delegates.xml work-alike:
https://sourceforge.net/p/graphicsmagick/code/ci/default/tree/config/delegates.mgk.in
This appears to be executed via:
https://sourceforge.net/p/graphicsmagick/code/ci/default/tree/magick/delegate.c
which tries to escape arguments using UnixShellTextEscape(). This function
appears to replace \`"$ chars with backslash-escaped versions. I'm not
sure this is a safe mechanism either.
Thanks
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