Exploit-DB #34264
Description: FreeDisk 1.01 iOS - Multiple Vulnerabilities
Type: webapps
Platform: ios
Date: 2014-08-04
Author: Vulnerability-Lab

Exploit:
Document Title:
===============
FreeDisk v1.01 iOS - Multiple Web Vulnerabilities


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1287


Release Date:
=============
2014-08-01


Vulnerability Laboratory ID (VL-ID):
====================================
1287


Common Vulnerability Scoring System:
====================================
7.1


Product & Service Introduction:
===============================
Transfer files between your iPhone/iPod/iPad and your computers without iTunes! Just start FreeDisk, and your iDevice is automatically 
turned into a wifi hard drive. You can then connect your iDevice to your computers, and use it as a regular hard drive, and easily 
transfer files. No need for third part software, or iTunes, to finally exchange files between your iDevices and your computers! 
FreeDisk can also turn your iDevice into an internet server to share your files with other smartphones (iOS, Android, Windows...) !
Last but not least, all your data are protected and can only be read when the app is running.

(Copy of the Homepage: https://itunes.apple.com/us/app/free-disk-turn-your-iphone/id896356251 )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research team discovered multiple vulnerabilities in the official  FreeDisk v1.01 iOS mobile web-application.


Vulnerability Disclosure Timeline:
==================================
2014-08-01: Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================
Sebastien BUET
Product: FreeDisk - iOS Mobile Web Application 1.01


Exploitation Technique:
=======================
Remote


Severity Level:
===============
High


Technical Details & Description:
================================
1.1
A local file include web vulnerability has been discovered in the official  FreeDisk v1.01 iOS mobile web-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 `uploadfile` POST method request to compromise the mobile web-application. The local file/path 
include execution occcurs in the index `file list` context next to the vulnerable `filename` item value. The attacker is able to 
inject the local malicious file request by usage of the available `wifi interface` upload form.

Remote attackers are also able to exploit the filename validation issue in combination with persistent injected script codes to execute 
different local malicious attacks requests. The attack vector is 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 6.8. Exploitation of the local file include web vulnerability requires no privileged web-application user account or user interaction. 
Successful exploitation of the local file include web vulnerability results in mobile application or connected device component compromise.


Request Method(s):
				[+] [POST]

Vulnerable Service(s):
				[+] FreeDisk v1.01

Vulnerable Module(s):
				[+] upload

Vulnerable Parameter(s):
				[+] filename

Affected Module(s):
				[+] FreeDisk App Index File Dir Listing (http://localhost:8080/)


1.2
An arbitrary file upload web vulnerability has been discovered in the official  FreeDisk v1.01 iOS mobile web-application.
The arbitrary file upload issue allows remote attackers to upload files with multiple extensions to bypass the web-server or system validation.

The vulnerability is located in the `upload` module. Remote attackers are able to upload a php or js web-shells by renaming the file with 
multiple extensions to bypass the file restriction mechanism. The attacker uploads for example a web-shell with the following name and extension 
`image.jpg.gif.js.php.jpg`. After the upload the attacker needs to open the file in the web application. He deletes the .jpg & . gif file 
extension and can access the application file with elevated access rights. 

The security risk of the arbitrary file upload web vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 7.4.
Exploitation of the arbitrary file upload web vulnerability requires no user interaction or privilege application user account with password.
Successful exploitation of the vulnerability results in unauthorized file access because of a compromise after the upload of web-shells.


Request Method(s):
				[+] [POST]

Vulnerable Service(s):
				[+] FreeDisk v1.01

Vulnerable Module(s):
				[+] upload

Vulnerable Parameter(s):
				[+] filename (multiple extensions)

Affected Module(s):
				[+] FreeDisk App Index File Dir Listing (http://localhost:8080/)


Proof of Concept (PoC):
=======================
1.1
The local file include web vulnerability can be exploited by local 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: LFI > FreeDisk App Index File Dir Listing (http://localhost:8080/)

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