Wifi Drive Pro v1.2 iOS - File Include Web Vulnerability

2015-05-04T00:00:00
ID SECURITYVULNS:DOC:31971
Type securityvulns
Reporter Securityvulns
Modified 2015-05-04T00:00:00

Description

Document Title:

Wifi Drive Pro v1.2 iOS - File Include Web Vulnerability

References (Source):

http://www.vulnerability-lab.com/get_content.php?id=1447

Release Date:

2015-03-13

Vulnerability Laboratory ID (VL-ID):

1447

Common Vulnerability Scoring System:

6.3

Product & Service Introduction:

This app lets you use your iphone, iPad or iPod Touch as a wireless USB drive through which you can download, save and view documents and files. Using the app you can transfer files from your PC or Mac either wirelessly or through a USB port and carry your files wherever you go.

(Copy of the Vendor Homepage: https://itunes.apple.com/en/app/wifi-drive-pro/id579582610 )

Abstract Advisory Information:

The Vulnerability Laboratory Core Research Team discovered file include web vulnerability in the official Wifi Drive Pro v1.2 iOS mobile application.

Vulnerability Disclosure Timeline:

2015-03-13: Public Disclosure (Vulnerability Laboratory)

Discovery Status:

Published

Affected Product(s):

Mindspeak Software Product: Wifi Drive Pro - iOS Mobile Web Application 1.2

Exploitation Technique:

Local

Severity Level:

High

Technical Details & Description:

A local file include web vulnerability has been discovered in the official Mindspeak Software - Wifi Drive Pro v1.2 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 `file upload` module. Remote attackers are able to inject own files with malicious `filename` values in the `file upload` POST method request to compromise the mobile web-application. The local file/path include execution occcurs in the index file dir listing of the wifi interface. The attacker is able to inject the local file include request by usage of the `wifi interface` in connection with the vulnerable file upload POST method request.

Remote attackers are also able to exploit the filename issue in combination with persistent injected script codes to execute different malicious attack requests. The attack vector is located 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 6.4. Exploitation of the local file include web vulnerability requires no user interaction or privileged web-application user account. Successful exploitation of the local file include web vulnerability results in mobile application compromise or connected device component compromise.

Request Method(s): [+] [POST]

Vulnerable Module(s): [+] File Upload

Vulnerable Parameter(s): [+] filename

Affected Module(s): [+] Index File Dir Listing (http://localhost:49276/)

Proof of Concept (PoC):

The local file include web vulnerability can be exploited by local attackers without privileged application user accounts or user interaction. For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.

PoC: GET http://localhost:49276//%3C./[LOCAL FILE INCLUDE VULNERABILITY!]%3E/2.png

PoC: Vulnerable Source <p><a href="..">..</a><br> <a href="68-2.png">68-2.png</a> ( 24.3 Kb, 2015-03-09 14:57:29 +0000)<br> <a href="/%3C./[LOCAL FILE INCLUDE VULNERABILITY!]%3E/2.png"></%3C./[LOCAL FILE INCLUDE VULNERABILITY!]%3E/2.png</a> ( 0.5 Kb, 2015-03-09 14:57:48 +0000)<br /> </p><form action="" method="post" enctype="multipart/form-data" name="form1" id="form1"><label>upload file<input type="file" name="file" id="file" /></label> <label><input type="submit" name="button" id="button" value="Submit" /></label></form></body></html></iframe></a></p>

--- PoC Session Logs [POST] (Inject)--- Status: 200[OK] POST http://localhost:49276/ Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Gro?e des Inhalts[846] Mime Type[application/x-unknown-content-type] Request Header: Host[localhost:49276] User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0] Accept[text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8] Accept-Language[de,en-US;q=0.7,en;q=0.3] Accept-Encoding[gzip, deflate] Referer[http://localhost:49276/] Connection[keep-alive] POST-Daten: POST_DATA[-----------------------------28140821932238 Content-Disposition: form-data; name="file"; filename="%3C./[LOCAL FILE INCLUDE VULNERABILITY!]%3E/2.png" Content-Type: image/png

Reference(s): http://localhost:49276/ http://localhost:49276//%3C./

Solution - Fix & Patch:

The vulnerability can be patched by a secure validation of the filename value in the upload POST method request. Restrict the filename input and disallow special chars. Ensure that not multiple file extensions are loaded in the filename value to prevent arbitrary file upload attacks. Encode the output in the file dir index list with the vulnerable name value to prevent an application-side injection attacks.

Security Risk:

The security risk of the local file include web vulnerability in the upload POST method request is estimated as high. (CVSS 6.3)

Credits & Authors:

Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@evolution-sec.com) [www.vulnerability-lab.com]

Disclaimer & Information:

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-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such 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 into databases or trade with fraud/stolen material.

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