Full Disclosure mailing list archives

Re: usb shorting to ground


From: "Dave \"No, not that one\" Korn" <davek_throwaway () hotmail com>
Date: Mon, 31 Dec 2007 04:13:40 -0000

Todd Troxell wrote:
I discovered rather inadvertently that laptops do not enjoy having
their USB VCC shorted to GND one bit. It is a sure DoS, in fact if
the machine has a stupid power supply, it could result in permanent
damage. It is kind of scary for kiosk machines like the those
ubiquitous Kodak photo centers.

I give you, the usb pwner. It could even hide inside a legitimate
stick:

USB Pwner schematic

VCC ------------
D+  ---(nc)    |
D   ---(nc)    |
GND ------------

  See also ...
http://www.hackerslab.org/images/geek/2005/may/etherkiller.jpg

    cheers,
      DaveK
-- 
Can't think of a witty .sigline today.... 



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