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USB Disk & File Transfer v1.3.1 - File Include Vulnerability
From: Vulnerability Lab <admin () vulnerability-lab com>
Date: Wed, 06 Mar 2013 01:51:30 +0100

Title:
======
USB Disk & File Transfer v1.3.1 - File Include Vulnerability


Date:
=====
2013-02-20


References:
===========
http://www.vulnerability-lab.com/get_content.php?id=881


VL-ID:
=====
881


Common Vulnerability Scoring System:
====================================
5.3


Introduction:
=============
USB Disk & File Transfer allows to store, view and manage files on your iPhone, iPad or iPod touch. You can connect 
from any 
computer over the Wi-Fi network and transfer files. Access to your Dropbox, Box, Google Drive or SkyDrive account to 
upload, 
download files and more. Also, exchange files between iPhone, iPhone or iPod touch, using wifi or bluetooth.

USB Disk & file Transfer features document viewer, PDF reader, music player, video player, image viewer, text editor, 
file 
manager and supports ZIP and RAR.

Supported files: AVI, FLV, DIVX, ZIP, RAR, Rx, PDF, MP3, M4P, AAC, WAV, M4A, MPV, M4V, MP4, MOV, 3GP, DOC, DOCX, XLS, 
XLSX, PPSX, 
PPTX, PPS, PPT, RTF, PAGES, NUMBERS, KEY, JPG, JPEG, PNG, GIF, BMP, PCX, TIFF, TIF, BMPF, ICO, CUR, XBM, HTML, TXT, 
text files like: C, M, H,...

(Copy of the Homepage: https://itunes.apple.com/us/app/usb-disk-file-transfer/id516927225 )


Abstract:
=========
The Vulnerability Laboratory Research Team discovered a file include web vulnerability in the mobile USB Disk & File 
Transfer v1.3.1 app for the apple ipad & iphone.


Report-Timeline:
================
2013-02-20:     Public Disclosure


Status:
========
Published


Affected Products:
==================
Apple
Product: USB Disk & File Transfer 1.3.1


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


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


Details:
========
A local file include web vulnerability via POST request method is detected in the mobile USB Disk & File Transfer 
v1.3.1 app for the apple ipad & iphone.
The vulnerability allows remote attackers via POST method to inject local app webserver folders to request unauthorized 
local webserver files.

The vulnerbility is located in the upload file module of the webserver (http://192.168.0.102:8080) when processing to 
load a manipulated 
name or path via POST. The execution of the injected path or name of the file request will occur when the attacker is 
processing to watch 
the file dir listing on the main index site.

Exploitation of the vulnerability requires no user interaction and can be done without privileged application user 
account (no password standard).
Successful exploitation of the vulnerability results in unauthorized path or file access via local file or path include 
attack.

Vulnerable Application(s):
                                [+] USB Disk & File Transfer v1.3.1 - ITunes or AppStore (Apple)

Vulnerable Module(s):
                                [+] File Upload  (Web Server) [Remote]

Vulnerable Parameter(s):
                                [+] name
                                [+] path

Affected Module(s):
                                [+] File Dir Index Listing


Proof of Concept:
=================
The local file include web vulnerability can be exploited by remote attackers without privileged application user 
account and 
also without required user interaction. For demonstration or reproduce ...

PoC:
http://192.168.0.102:8080/files/?_=[FILE OR PATH INCLUDE VULNERABILITY!]


Review: Index Listing - Name & Path

{"currentDir":"","files":[{"name":"[FILE INCLUDE VULNERABILITY!].png","tam":"27.3 KB","date":"18.02.13 23:18",
"type":"FILE","path":"[PATH INCLUDE VULNERABILITY!.png","id":0},{"name":"8765434.png","tam":"228.5 KB","date":"18.02.13 

23:23","type":"FILE","path":"8765434.png","id":1}]}


Manually steps to reproduce ...
1. Start the application or scan for a available application
2. Visit the web interfact by opening the following network ip 192.168.0.102:8080 in your browser
3. Start the your session tamper to manipulate the next POST request
4. Choose a file to upload and activate the tamper
5. Replace the path or name values with your own local app path or local file to request after sending
6. Send the data to the webserver via POST and watch the index listing to provoke the execution out of the file dir 
listing (name & path)
7. Successful reproduced!


Reference(s):
http://192.168.0.102:8080/


Risk:
=====
The security risk of the local file/path include web vulnerability via POST request method is estimated as high(+).


Credits:
========
Vulnerability Laboratory [Research Team]  -    Benjamin Kunz Mejri (bkm () vulnerability-lab com)


Disclaimer:
===========
The information provided in this advisory is provided as it is without any warranty. Vulnerability-Lab disclaims all 
warranties, 
either expressed or implied, including the warranties of merchantability and capability for a particular purpose. 
Vulnerability-
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damages. Some 
states do not allow the 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 
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or trade with fraud/stolen material.

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                                        Copyright © 2013 | Vulnerability Laboratory



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