Re: [Full-disclosure] usb shorting to ground

2007-12-30 Thread Dave "No, not that one" Korn 
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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[Full-disclosure] usb shorting to ground

2007-12-27 Thread Todd Troxell 
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 

-- 
Todd Troxell
http://rapidpacket.com/~xtat

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