How do you make sure vue application is CSP complaint in Vuejs explain with example?087

 How do you make sure vue application is CSP complaint in Vuejs explain with example?

Here's how to ensure your Vue application is CSP-compliant:

1. Set CSP Headers:

• Server-Side: Configure your web server to send appropriate CSP headers in responses. This is the most secure approach.

• Vue CLI: If using Vue CLI, add CSP directives to the vue.config.js file:

JavaScript

module.exports = {
  devServer: {
    headers: {
      'Content-Security-Policy': "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; img-src 'self' data:",
    },
  },
};

2. Inline Scripts and Styles:

• Use inline-template or script setup for inline JavaScript.

• Use <style> tags within components for inline CSS.

• Avoid unsafe-inline sources if possible, as they can introduce vulnerabilities.

3. External Resources:

• Explicitly whitelist trusted domains for external scripts, stylesheets, images, etc., using script-src, style-src, img-src, etc. directives.

4. Trusted Types (Optional):

• Use Trusted Types to sanitize and enforce security for dynamically generated content.

5. Vue CLI Plugin for CSP (Optional):

• Consider using a Vue CLI plugin like vue-cli-plugin-csp for easier configuration and reporting.

6. Testing and Monitoring:

• Use browser developer tools to check CSP violations.

• Set up reporting mechanisms to catch issues in production.

Example with Vue CLI:

JavaScript

// vue.config.js
module.exports = {
  csp: {
    directives: {
      defaultSrc: ["'self'"],
      scriptSrc: ["'self'", "'unsafe-inline'"], // Adjust as needed
      styleSrc: ["'self'", "'unsafe-inline'"], // Adjust as needed
      imgSrc: ["'self'", "data:"],
    },
  },
};

Key Points:

• Start with a strict policy and gradually relax it as needed.

• Prioritize security over convenience.

• Regularly review and update your CSP.

• Consider using a Content Security Policy generator for assistance.

Sources

1. https://github.com/Dimonsda/Recipe-book