Re: Printer Attacks

Hi,

On Tue, 8 Nov 2011, The Doctor wrote:

> Networked devices can also be a useful cover for hiding equipment 
> smuggled into the target site and hidden in plain view.  For example, 
> attaching a wireless access point between the printer and the rest of 
> the LAN often went unnoticed (perfect for sneaking right into the core 
> of the client's network); in a pinch, the excuse "The cable wasn't long 
> enough, so I put in an Ethernet switch and a three foot CAT-6 until we 
> get a longer one," worked.  I rather doubt that tucking a netbook behind 
> a networked printer or fax machine with a sticy that reads "PRINT 
> SERVER: DO NOT TOUCH" would still work these days, though.

LOL. Networked printers might also be a good starting point for NAC 
bypass: sometimes their MAC addresses are considered trusted and might be 
able to access the corporate network. Also, keep in mind that physical 
access is always a risk.

While we are at it, I'd like to throw in a couple of interesting 
references about networked printers hacking:

http://archive.hack.lu/2010/Costin-HackingPrintersForFunAndProfit-slides.pdf
http://www.irongeek.com/i.php?page=security/networkprinterhacking
[and much more, just do a Google search]

Cheers,

-- 
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Marco Ivaldi                          OPSA, OPST, OWSE, PCI-ASV
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