MyFolder FileManager 1.8 iOS - Multiple Vulnerabilities

Document Title:
===============
MyFolder FileManager 1.8 iOS - Multiple Vulnerabilities


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1001


Release Date:
=============
2013-07-09


Vulnerability Laboratory ID (VL-ID):
====================================
1001


Common Vulnerability Scoring System:
====================================
7.3


Product & Service Introduction:
===============================
My folder provides wireless U disk, the folder sorting features, document management, file preview features. 

Default folder rules, the different types of files transfered to the corresponding folder
File Transfer features: Upload your files to your iOS device via Wi-Fi or iTunes; Browse or download through 
your PC`s web browser from iOS devices. File Preview feature: pictures, office documents (doc, xls, ppt, ...), 
pdf, txt, as well as audio and video file preview features. Custom folder rules, in accordance with the rules 
organize your files into the corresponding folder & a Password lock function

(Homepage of the Vendor: https://itunes.apple.com/en/app/myfolder-wifi+disk+file-manager/id583185266 )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered multiple vulnerabilities in the MyFolder Wifi v1.8 application (Apple iOS - iPad & iPhone).


Vulnerability Disclosure Timeline:
==================================
2013-07-10:    Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
Apple AppStore
Product: MyFolder - iOS Application 1.8


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


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


Technical Details & Description:
================================
1.1
A local command injection web vulnerability is detected in the MyFolder Wifi v1.8 application (Apple iOS - iPad & iPhone).
The vulnerability allows to inject local commands via vulnerable system values to compromise the apple mobile application.

The vulnerbility is located in the index module when processing to load the ipad or iphone device name. Local attackers can 
change the ipad or iphone device name to system specific commands and file/path requests to provoke the execution when 
the victim is processing to watch the index site of the application.

Exploitation of the web vulnerability requires a local privilege device user account (standard) without user interaction.
Successful exploitation of the vulnerability results unauthorized execution of system specific commands or file/path requests.

Vulnerable Application(s):
				[+]  MyFolder Wifi v1.8 - ITunes or AppStore (Apple)

Vulnerable Module(s):
				[+] Index

Vulnerable Parameter(s):
				[+] device name (iPad or iPhone)

Affected Module(s):
				[+] Header Device Name - Listing



1.2
A persistent input validation web vulnerability is detected in the MyFolder Wifi v1.8 application (Apple iOS - iPad & iPhone).
The bug allows an attacker (remote) to implement/inject malicious script code on the application-side (persistent) of the app web service. 

The vulnerability is located in the index file dir listing module of the web-server (http://localhost:8080/filename) when processing to 
display via POST request method injected manipulated `file or folder names`. The persistent script code will be executed in the main 
index file dir listing module when the service is lists the new malicious injected filename as item.

Exploitation of the persistent web vulnerability requires low or medium user interaction without application user account.
Successful exploitation of the vulnerability can lead to persistent session hijacking (customers), account steal via persistent web 
attacks, persistent phishing or stable (persistent) certificate mail notification context manipulation.

Vulnerable Application(s):
				[+] MyFolder Wifi v1.8 - ITunes or AppStore (Apple)

Vulnerable Module(s):
				[+] Add File

Vulnerable Parameter(s):
				[+] filename

Affected Module(s):
				[+] Index Listing


Proof of Concept (PoC):
=======================
1.1
The local command injection vulnerability can be exploited by remote attacker with device access and without user interaction.
For demonstration or reproduce ...


><script type='text/javascript'>function check() {var file = document.getElementById('file'); 
if (file.value === '') return false; else return true;}</script></head><body><h1>iPad 360 ¥337[COMMAND/PATH INJECTION VULNERABILITY!]</h1>
<bq>Browse or download files from "My Folder", Upload files from computer to "My folder"</bq>

Steps to reproduce ...

1. Open the apple device (iphone or ipad)
2. Change the device name in the settings option to a test payload with external frames or an alert message
3. Save the settings and open the MyFolder application
4. Activate the Wifi function of the app
5. Open the local network url of the web-server with your computer and a brower
6. Now we open the application and the code will be executed from the main header index were the apple device name is being displayed
7. Successful reproduced!



1.2
The persistent script code injection web vulnerability can be exploited by remote attackers without privileged application user account 
and with low required user interaction. For demonstration or reproduce ...

<hr shade size=2 align=center width=100% color=#eeeeee><p><a href="..">..</a><br />
<a href="Archives/">Archives/</a>		(     0.1 Kb, Modified:07/09/2013 01:34)<br />
<a href="Audio/">Audio/</a>		(     0.1 Kb, Modified:07/09/2013 01:34)<br />
<a href="Documents/">Documents/</a>		(     0.1 Kb, Modified:07/09/2013 01:34)<br />
<a href="Other/">Other/</a>		(     0.1 Kb, Modified:07/09/2013 01:34)<br />
<a href="[PERSISTENT INJECTED SCRIPT CODE!]/">[OUTPUT: PERSISTENT INJECTED SCRIPT CODE!]/</a>(0.2 Kb, Modified:07/09/2013 01:42)<br />
<a href="Video/">Video/</a>		(     0.1 Kb, Modified:07/09/2013 01:34)<br />
<a href="sample.docx">sample.docx</a>		(   104.5 Kb, Modified:04/24/2013 22:59)<br />
<a href="[PERSISTENT INJECTED SCRIPT CODE!].pdf">sample.pdf</a>		(    48.9 Kb, Modified:04/24/2013 22:59)<br />
<a href="[PERSISTENT INJECTED SCRIPT CODE!].gif">sample.pptx</a>		(   473.4 Kb, Modified:04/24/2013 22:59)<br />

--- Request Session Logs ---
Status: 200[OK]

POST http://localhost:8080/ 
Load Flags[LOAD_DOCUMENT_URI  LOAD_INITIAL_DOCUMENT_URI  ] Content Size[1739] Mime Type[application/x-unknown-content-type]
   

Request Headers:
      Host[localhost:8080]
      
User-Agent[Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0]
      
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
Accept-Language[en-US,en;q=0.5]
      
Accept-Encoding[gzip, deflate]
DNT[1]
      
Referer[http://localhost:8080/]
      
Connection[keep-alive]
   

Post Data:
      POST_DATA[-----------------------------23942944224345
Content-Disposition: form-data; name="file"; filename="[PERSISTENT INJECTED SCRIPT CODE!]"
Content-Type: image/png



Solution - Fix & Patch:
=======================
1.1
The command/path injection web vulnerability can be patched by a parse and secure encoding of the device name in the header location.

1.2
The persistent script code injection vulnerability with persistent vector can be patched by a secure parse and restriction of the filename value.


Security Risk:
==============
1.1
The security risk of the local command or path inject web vulnerability is estimated as high(+).

1.2
The security risk of the persistent input validation web vulnerability is estimated as high(-).


Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri ([email protected])


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=========================
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