WiFly 1.0 Pro iOS – Multiple Web açıkları bulunmuş olup açığın kullanımı hakkında yorumlar aşağıdaki şekilde bulunmaktadır.
Title:
======
WiFly 1.0 Pro iOS - Multiple Web Vulnerabilities
Date:
=====
2013-07-15
References:
===========
http://www.vulnerability-lab.com/get_content.php?id=1011
VL-ID:
=====
1011
Common Vulnerability Scoring System:
====================================
6.3
Introduction:
=============
It is the best solution for transferring photos, songs, documents, movies and other files between computer
and your mobile devices over wireless network. Simply launch application on your iOS device and scan QR
code from http://wifly.me to connect your phone. Drop your files into opened page and vice versa!
No cloud or internet access required - no data leaves your local network. Both your devices must have access
to the same LAN or WLAN - no additional network configurations needed. Transferred documents can be opened with
any supported App on your iOS device.
Capabilities:
- Multiple uploads
- Easily Drag & Drop multiple files to WiFly
- Preview pictures in the browser
- Downloading the entire folder to your computer
- Browsing files and folders directly on mobile device
- Exchange files between mobile devices
- Built in preview of images, documents, music and video files
(Copy of the Homepage: https://itunes.apple.com/us/app/wifly-pro/id641092695 )
Abstract:
=========
The Vulnerability Laboratory Research Team discovered multiple vulnerabilities in the WiFly 1.0 Pro application (Apple iOS - iPad & iPhone).
Report-Timeline:
================
2013-07-15: Public Disclosure (Vulnerability Laboratory)
Status:
========
Published
Affected Products:
==================
Apple AppStore
Product: WiFly Pro 1.0
Exploitation-Technique:
=======================
Remote
Severity:
=========
High
Details:
========
A local file include and arbitrary file upload web vulnerability is detected in the WiFly 1.0 Pro application (Apple iOS - iPad & iPhone).
The vulnerabilities are located in the file upload module of the web-server (http://localhost:4885/) when processing
to request via POST a manipulated filename. The injected file will be accessable via the index listing module of the application.
Remote attackers can exchange the filename with a double or tripple extension via POST method to bypass the upload validation and filter process.
After the upload the attacker access the file with one extension and exchange it with the other one to execute for example php, js, html codes.
The filter in the application itself disallow to rename a file with special chars because of a input field restriction. Attackers need to request
2 different urls. First the file as url with a parameter of the filename inside to display and as secound step the file will be uploaded with
the manipulated filename in the POST request.
Exploitation of the vulnerability requires no user interaction but the victim iOS device needs to accept the other device connection.
Successful exploitation of the vulnerability results in unauthorized path or file access via local file include or arbitrary file upload.
Vulnerable Application(s):
[+] WiFly Pro 1.0 - ITunes or AppStore (Apple)
Vulnerable Module(s):
[+] Upload
Vulnerable File(s):
[+] upload.json & add
Vulnerable Parameter(s):
[+] filename
Affected Module(s):
[+] Index Listing (http://localhost:4885/)
Proof of Concept:
=================
The local file/path include and arbitrary file upload vulnerability can be exploited by remote attackers without user interaction
but the connection needs to be accepted by the target system. For demonstration or reproduce ...
Standard Request:
Content-Disposition: form-data; name="files[]"; filename="s2.png"\r\nContent-Type: image/png\r\n\r\n?PNG\r\n\n
Status: 200
POST http://192.168.2.104:4885/api/1/upload.json?id_parent=0&size=53025&last_modified=1331091664536000&name=new-image23.png&sessionid=1373658611109
Load Flags[LOAD_BYPASS_CACHE ] Content Size[118] Mime Type[application/x-unknown-content-type]
PoC: 1.1 - File/Path Include Vulnerability
POST http://192.168.2.104:4885/api/1/upload.json?id_parent=0&size=53025&
last_modified=1331091664536000&name=../../[File/Path Include Vulnerability!].png&sessionid=1373658611109
POST_DATA[-----------------------------27213192708057
Content-Disposition: form-data; name="files[]"; filename="../../[File/Path Include Vulnerability!]"
Content-Type: image/png
PoC: 1.2 - Arbitrary File Upload Vulnerability
POST http://192.168.2.104:4885/api/1/upload.json?id_parent=0&size=53025&
last_modified=1331091664536000&name=[Arbitrary File Upload Vulnerability!].png.gif.html.php.js&sessionid=1373658611109
POST_DATA[-----------------------------27213192708057
Content-Disposition: form-data; name="files[]"; filename="[Arbitrary File Upload Vulnerability!].png.gif.html.php.js"
Content-Type: image/png
Solution:
=========
The vulnerability can be patched by a restriction of the json upload request and url parameter.
The POST request when processing to upload needs to be restricted, encoded and filtered.
Risk:
=====
The security risk of the local file/path include & arbitrary file upload vulnerability is estimated as high.
Credits:
========
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri ()
Disclaimer:
===========
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