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Date: Wed, 18 Jan 2012 22:14:43 -0700
From: Kurt Seifried <>
CC: Vincent Danen <>,
Subject: Re: CVE request: tucan insecure plugin update mechanism

On 01/18/2012 07:12 PM, Vincent Danen wrote:
> Saw a Debian bug report about tucan and how it insecurely handles
> "plugin" updates (which are basically python scripts).  These "plugins"
> are executed with the privileges of the user running tucan, and because
> there is no authenticity checking (plugins are not signed, doesn't look
> like there are any certificate checks when connecting to the update
> server, etc.), it's prone to MITM attacks where an attacker could
> basically run arbitrary code as the user running tucan.
> I'm not sure how popular this program is or how widely used, but this is
> definitely not good design.
> References:
> (I'm cc'ing who I hope is one of the lead developers, although it
> doesn't look like much development has been done in the last year)
Please use CVE-2012-0063 for this issue.


-- Kurt Seifried / Red Hat Security Response Team

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