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Date: Mon, 10 Dec 2007 18:04:29 +0100
From: "Stefan Kanthak" <>
To: <>
Subject: Re: Windows binary of "GSview 4.8" contain vulnerable zlib (CAN-2005-2096) and vulnerable bz2lib (CAN-2005-0758 & CAN-2005-0953)

I wrote Monday, October 29, 2007 10:04 PM:

> I wrote Sunday, October 21, 2007 2:18 PM:
> > Anonymous <> wrote Saturday, October 20, 2007 11:55 AM:
> > 
> >> As a workaround, one could try to manually replace zlib32.dll in a Windows
> >> GSView 4.8 installation with the current zlib1.dll version 1.2.3.
> [...]
> > Unfortunately the maintainer of GSview choose not to reply to my bug
> > report which included a question about the source of the ZLIB32.DLL.
> The maintainer finally replied to the last of my three attempts to
> contact him (very timely, regarding the different timezones we are in):
> | I can't do much about it just at the moment.  I've had a computer
> | motherboard failure and while I've now got a new computer, I haven't
> | got all my development tools running yet.
> |
> | I will update the DLL in the next release.  Yes, I compiled the DLL
> | myself.  There wasn't a precompiled version at the time I started using
> | it.

In the meantime an updated version 4.9 of GSView is available from
<> that fixes CAN-2005-2096 (zlib)
as well as CAN-2005-0953 and CAN-2005-0758 (libbz2).

The latter had been disclosed to the author/maintainer only until now.

The zlib32.dll distributed in the installation is now the "official"
zlib1.dll from; due to a lack of an "official" libbz2.dll this
one is provided by the maintainer.

Stefan Kanthak

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