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Date: Mon, 28 Nov 2011 08:22:46 -0700
From: Kurt Seifried <>
CC: Jan Lieskovsky <>,
        "Steven M. Christey" <>,
        Leo Iannacone <>, Colin Watson <>
Subject: Re: CVE Request -- ClearSilver (neo_cgi) -- Format
 string flaw by processing CGI error messages in Python module

On 11/27/2011 10:21 AM, Jan Lieskovsky wrote:
> Hello Kurt, Steve, vendors,
>   a format string flaw was found in the Python CGI Kit (neo_cgi)
> module of ClearSilver, a language-neutral HTML templating system,
> processed certain input, leading to Common Gateway Interface (CGI)
> script errors. A remote attacker could provide a specially-crafted
> input, which once processed by an application, using the Python
> language API of ClearSilver neo_cgi module, could lead to that
> particular application crash, or, potentially arbitrary code
> execution with the privileges of the user running the application.
> References:
> [1]
> [2]
> Patch, proposed by the issue reporter to the Debian Bug Tracking System:
> [3]
> Could you allocate a CVE id for this issue?
> Thank you && Regards, Jan.
> -- 
> Jan iankko Lieskovsky / Red Hat Security Response Team
Please use CVE-2011-4357 for this issue.


-Kurt Seifried / Red Hat Security Response Team

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