USB Sharp 1.3.4 Local File Inclusion / Cross Site Scripting

`Title:  
======  
USB Sharp v1.3.4 iPad iPhone - Multiple Web Vulnerabilities  
  
  
Date:  
=====  
2013-02-16  
  
  
References:  
===========  
http://www.vulnerability-lab.com/get_content.php?id=873  
  
  
VL-ID:  
=====  
873  
  
  
Common Vulnerability Scoring System:  
====================================  
6.3  
  
  
Introduction:  
=============  
USB Sharp Pro can turn your iPhone, ipad, ipod into a large Capacity, Portable and Wireless storage disk,   
Facilitate and efficient manage of your files!  
  
Support for editing php, js, html file.  
Support the open format, such as flv,asf,rmvb,avi,mpg,mkv,wmv.  
Dropbox Operate, multiple files upload & download, history,create folder  
Add manual  
Chrome and Firefox Supported upload multiple files  
Extract files from encryption .rar  
Optimization pdf reader,  
Support for importing videos/photos to Photo Library  
Support for exporting video from Photo Library  
Search file(folder) name function added  
Picture Viewer Improved  
Unzip type added  
Add authentication for local login  
Add authentication for wifi transfer  
Custom background image;  
... ... ...  
Full screen view files Supported  
Multiple photo import Supported  
Sorting by file name?create time and file type  
View, copy, move, delete, rename, email, zip Compression and unzip files/folders  
Encryption folder, protect your files  
Extract all files from a compressed .zip file  
Glide deleting function  
Select all and Cancel all operate  
Transferring files by wifi and iTunes file sharing  
Email multiple files, folder Supported  
Open email attachments  
Photo import Supported  
Open files in other applications  
Landscape mode supported  
iPad-compatible  
  
Plain text: .txt .php .js .html  
Document: .pdf .csv .rtf .rtfd .doc .docx .xls .xlsx .ppt .pptx (office 2003 or later)  
Image: .png .jpg .jpeg .gif .bmp .xbm .tif .tiff  
Audio: .mp3 .m4a .aac  
Video: .mp4 .mov .m4v .3gp .flv .asf .rmvb .avi .mpg .mkv .wmv  
Web: .htm .html .xhtml  
Compressed: .zip .rar  
  
Cost: 2,99$ - iPad or iPhone (iTunes or Appstore)  
  
(Copy of the Homepage: https://itunes.apple.com/us/app/usb-sharp-pro/id436590784 )  
  
  
Abstract:  
=========  
The Vulnerability Laboratory Research Team discovered multiple web vulnerabilities in the mobile USB Sharp v1.3.4 app for the apple ipad & iphone.  
  
  
Report-Timeline:  
================  
2013-02-16: Public Disclosure  
  
  
Status:  
========  
Published  
  
  
Affected Products:  
==================  
Apple AppStore  
Product: USB Sharp - Web Server Application 1.3.4  
  
  
Exploitation-Technique:  
=======================  
Remote  
  
  
Severity:  
=========  
High  
  
  
Details:  
========  
1.1  
A local file include web vulnerability via POST request method is detected in the mobile USB Sharp v1.3.4 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://192.168.0.10/) when processing to load a manipulated   
filename via POST. The execution of the injected path or file request will occur when the attacker is processing to watch the file dir listing.  
  
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 Sharp v1.3.4 - ITunes or AppStore (Apple)  
  
Vulnerable Module(s):  
[+] File Upload (Web Server) [Remote]  
  
Vulnerable Parameter(s):  
[+] filename  
  
Affected Module(s):  
[+] Filename Dir Index Listing  
  
  
  
1.2  
A persistent input validation vulnerability is detected in the mobile USB Sharp v1.3.4 app for the apple 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 webserver (http://192.168.0.10:41491/) when processing to inject  
via POST method manipulated new chxItem parameters. The persistent script code will be executed out of the main index file dir listing   
module when the service is processing to list the new foldername as item.   
  
Exploitation of the vulnerability requires low or medium user interaction without privileged 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):  
[+] USB Sharp v1.3.4 - ITunes or AppStore (Apple)  
  
Vulnerable Module(s):  
[+] Index File Dir Listing  
  
Vulnerable Parameter(s):  
[+] Foldername (items > chxItem)  
  
Affected Module(s):  
[+] Index Listing  
  
  
Proof of Concept:  
=================  
1.1  
The local file include web vulnerability can be exploited by remote attackers without user interaction and without   
privileged application user account. For demonstration or reproduce ...  
  
Example:  
File > Upload via POST > Tamper Session > Change Filename Value to File or Path + Extension > Open Listing > Execution   
  
PoC: (POST)  
-----------------------------1337341202721337  
Content-Disposition: form-data; name="file"; filename="..%2F..%2F..%2F..%2Fcmd>home>tmp%00<'.JPG"  
Content-Type: image/jpg  
  
Note: Encode the request ago to bypass the encoding validation of the input. (%2F)  
  
Reference(s):  
http://192.168.0.10:41491/  
  
  
1.2  
The persistent input validation vulnerability can be exploited by remote attackers without user interaction and without   
privileged application user account. For demonstration or reproduce ...  
  
  
PoC: Index - Folder Dir Listing  
  
<tbody id="filelist"><tr><td><input name="chxItem" value="[PERSISTENT INJECTED SCRIPT CODE!]"   
onclick="selChkItem(this)" type="checkbox"></td><td><a href="/[PERSISTENT INJECTED SCRIPT CODE!]%3C?guid=  
47E79C76-D4C2-4086-B695-3CEE71A6B5F3&type=child" class="file"><span style="vertical-align:middle;"><img src="/Folder.png"   
style="border:0;vertical-align:middle" ;=""></span>%20"><[PERSISTENT INJECTED SCRIPT CODE!];)" <<="" a=""></td><td></td>  
<td>2013-02-10 22:57:54</td><td><input name="commit" type="button" value="Delete"   
onclick="DelegateData('/[PERSISTENT INJECTED SCRIPT CODE!]','47E79C76-D4C2-4086-B695-3CEE71A6B5F3');"   
class='button' /></form></td></tr></tbody></table></iframe></a></td></tr><tr><td colspan="5"><span class="total">1 items</span>  
</td></tr></tbody>  
  
  
Reference(s):  
http://192.168.0.10:41491/  
  
  
Risk:  
=====  
1.1  
The security risk of the local file/path include web vulnerability via POST request method is estimated as high(+).  
  
1.2  
The security risk of the persistent input validation web vulnerability is estimated as medium.  
  
  
Credits:  
========  
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri ([email protected])  
  
  
Disclaimer:  
===========  
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--   
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`