CVE-2023-49974

Customer Support System 1.0 - Cross-Site Scripting (XSS) Vulnerability in "contact" field/parameter on "customer_list" Page

Description: Customer Support System 1.0 is vulnerable to stored XSS. A XSS vulnerability exists in version 1 of the Customer Support System. A malicious actor can insert JavaScript code through the "contact" field/parameter when editing/creating a customer. The code is executed whenever the page "/customer_support/index.php?page=customer_list" is visited.

Vulnerable Product Version: Customer Support System 1.0
CVE Author: Geraldo Alcântara
Date: 28/11/2023
Confirmed on: 19/12/2023
CVE: CVE-2023-49974
Tested on: Windows

Steps to reproduce:

1. Log in to the application.
2. Navigate to "/customer_support/index.php?page=customer_list" to edit an existing customer or "/customer_support/index.php?page=new_customer" to create a new customer.
3. Create or edit a customer and insert the malicious payload into the "contact" field/parameter.
4. Payload:

</dt></b><script>alert(document.domain)</script>

Discoverer(s)/Credits:
Geraldo Alcântara