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Date: Wed, 7 Jan 2009 09:32:06 +0100
From: "Bernhard R. Link" <brlink@...ian.org>
To: oss-security@...ts.openwall.com
Subject: Re: Fwd: Using xdg-open in /etc/mailcap causes hole in Firefox (Demonstration/Exploit included)
* Josh Bressers <bressers@...hat.com> [090106 20:47]:
> Here's a heads up for everyone (I've CCd the discoverer)
> ----- Forwarded Message -----
[...]
> This page delivers a .desktop file with the mime-type "application/pdf". In default configuration, Firefox offers to open this file with the default application, which is xdg-open. Just one click on "OK" (and most users won't have a closer look at the dialog!) and the content in the .desktop file is immediately executed!
I guess that is what people get for reinventing "see", they get the
exact same security problems other browser/"generic viewer" combinations
had years ago....
And xdg-open had not even a way to specify the mime-type...
</rant>
Bernhard R. Link
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