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Re: Vulnerability discloses PIN used in Microsoft Excel secure printing
From: "Thor (Hammer of God)" <thor () hammerofgod com>
Date: Mon, 31 Jan 2011 18:15:14 +0000

I assume it is embedded so that cancelled or queued jobs can still require PIN.  You can't have one job pause all other 
jobs in the queue, so it would need some way of continuing from bypass.  The whole "vulnerability" angle is pretty lame.

t

-----Original Message-----
From: full-disclosure-bounces () lists grok org uk [mailto:full-disclosure-
bounces () lists grok org uk] On Behalf Of Michael Holstein
Sent: Monday, January 31, 2011 8:34 AM
To: Christian Sciberras
Cc: full-disclosure () lists grok org uk
Subject: Re: [Full-disclosure] Vulnerability discloses PIN used in Microsoft
Excel secure printing


Wtf, I've never heard heard of a 'secure' print :S



Most large multifunction devices do this .. it's not "secure" in the
traditional (crypto) sense of the word, it's just a part of the job sent via
the postscript driver. Look at the PSD files for any large multifunction and
you'll find the options for it.

How it works is instead of printing the job immediately, it queues and holds
until the operator goes and enters the code on the console .. so that you have
time to walk over to the printer and grab it, versus having it sit there while
you walk down the hall.

What's interesting is that Excel is embedding the PIN (part of the printer
driver) in the default printer settings it saves in the document metadata.

The PIN itself isn't particularly private (it's sent in the clear when
printing) but embedding it is dumb.

Cheers,

Michael Holstein
Cleveland State University

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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/


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