# Exploit Title: Magnet Networks – Weak WPA-PSK passphrases used in Tesley CPVA 642 Router# Google Dork: # Date: 01/06/2016# Author: Matt O'Connor# Advisory Link:https://www.rgb.ie/magnet-broadband-weak-wpa-psk-algorithm.pdf# Version: # Category: Remote# Tested on: Magnet Networks Tesley CPVA 642
The Tesley CPVA 642 routers supplied by Magnet Networks are vulnerable to an offline dictionary attack if the WPA-PSK handshake is obtained by an attacker.
The WPA-PSK pass phrase has the following features:
• Starts with MAGNET0
• Adds six random numerical digits
• 1 million possible combinations ( MAGNET0000000 – MAGNET0999999 )
The entire keyspace can be generated using “mask processor” by ATOM, piping each letter out to its own file,for example:./mp32 MAGNET0?1?1?1?1?1?1> magnet_networks_tesley_ks.txt
The .txt file weighs in at around 45mb.
Using a 1.4ghz i3 processor on a budget laptop, we were hitting 1,000 keys per second.Breakdown below:
• 1,000,000/1,000 keys per second =1,000 seconds
• 1,000/60 seconds =16~ minutes
The WPA-PSK handshake we used has the password MAGNET0349325 and was cracked within ~6 minutes.
If you’re using the default password on your Magnet Networks Tesley CPVA 642 Router, we recommend changing it immediately to a more secure password, using a mix of letters, numbers and symbols.
On the 20th of June 2016, Magnet Networks Customer Care confirmed via email that these routers are not used by Magnet Networks anymore.
