Re: [Full-disclosure] Sniffing RFID ID's ( Physical Security )

[Brate Sanders <brate_sanders@xxxxxxxxxxx>]

----- Original Message ----
From: Josh L. Perrymon <joshuaperrymon@xxxxxxxxx>
To: full-disclosure@xxxxxxxxxxxxxxxxx; dailydave@xxxxxxxxxxxxxxxxxxxxx
Sent: Tuesday, 27 June, 2006 9:41:23 AM
Subject: [Full-disclosure] Sniffing RFID ID's ( Physical Security )

My ideas on RFID risk in its current implementation:
I'm thinking a lot of the risk with RFID would be within ID cards and physical 
security. I have been in 100's of companies that use RFID ID cards for physical 
security to access a building. Just rock up and swipe your badge in front of 
the reader right???   

What if an attacker was sitting at the cafe downstairs sniffing RFID ( Well, 
sending out RFID signals to power the chips and get a response ). Wouldn't it 
be trivial to obtain the STATIC ID codes stored on the RFID chips and write 
them to a generic chip? THis new card could easily be used to walk right in  to 
the target company? As we all know.. once your inside it's trivial to root the 
entire network.  Just insert your usb/ CD with an autorun backdoor sploit 
connecting outside OR plug in a small wireless AP. 

Go back down to the coffee shop and hack away.





I am sure RFID has a lot of issues and problems associated with it. But if you 
can walk into a building do something and walk out to hack later, the company 
has a lot of security issues it needs to handle before starting to worry about 
securing their RFID access mechanism.

There may be some scenarios where a bad design or implementation is causing a 
problem or data loss/theft. But what specific problem have you seen or are 
concerned about? Or at least care to share the reasons for your concern?




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