XSS Scanner
Cross-Site Scripting (XSS) is one of the most well known web application vulnerabilities. It even has a dedicated chapter in the OWASP Top 10 project and it is a highly chased vulnerability in bug bounty programs.
The scanner gets a link from the user and scan the website for XSS vulnerability by injecting malicious scripts at the input place. The injection happens in headless browser named Chromium and controlled by Puppeteer automation.
It works in two steps:
- Find the target: In this first step, the tool tries to identify all the places at the page including injectable parameters in forms, URLs, headers, etc.
- Test for XSS: For each place discovered in the previous step, the scanner will try to detect if the parameters are vulnerable to Cross-Site Scripting. The tool injects a piece of JavaScript code, including some special HTML characters (>, <, ", ') and it will try to see if they are returned in the response page without sanitization. If the tool detects at least one vulnerability, it will return that the website have XSS vulnerability.
Technologies
- Puppeteer
- Javascript
- NodeJS
- Express
Prerequisites
For able to be run the scanner you need to have NodeJS installed on your computer and the browser need to include Cors extension If both of these things are installed, all you have to do in the terminal is:
npm install
and after that just for run the server you need:
npm start
After server is running just open the scanner.html file
