Cross Site Request Forgery in 2wire routers Aug 15 2007 05:48AM
hkm hakim ws
Cross Site Request Forgery in 2wire routers

Vulnerable Routers: 1701HG, 2071 Gateway
Software: v3.17.5, 5.29.51 Password Not Set (default)

Greetz a la Comunidad Underground de México, y a los
que me ayudaron a probarlo: Preth00nker, nitr0us, ...
hkm (at) hakim (dot) ws [email concealed]

I. Background
This is the most popular router in Mexico and the default installation from the ISP has no system password.

II. Vuln
It is possible to send a request to the router that will modify its configuration.

It does not validate POST, or Referer or Anything...

II. Exploit
We just need the client to do a request to the router with the configuration we desire.


Set a password (NUEVOPASS):

Add names to the DNS ( www.prueba.hkm):

Disable Wireless Authentication

Set Dynamic DNS

Disable the Firewall
Reset the device

DNS Poisoning demo:

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