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

vendor:

DSL-2730B AU

by:

Todor Donev

7.5

CVSS

HIGH

Authentication Bypass

287

CWE

Product Name: DSL-2730B AU

Affected Version From: 02.01

Affected Version To: 02.01

Patch Exists: NO

Related CWE: N/A

CPE: h:d-link:dsl-2730b_au

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: None

2015

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

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=WAN-1

Mitigation:

Disable remote management and ensure that the router is not exposed to the public internet.

Source

Exploit-DB raw data:

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=