Automating Bug Bounty Hunting: Missing Header and Anti-Framing Policy Vulnerabilities

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Automated bug bounty hunting has become a powerful tool for identifying vulnerabilities efficiently. In this case, two critical vulnerabilities were discovered: Missing Header and Missing Anti-Framing Policy. These vulnerabilities can lead to security risks such as clickjacking and data exposure. Below are some practical steps, commands, and code snippets to help you understand and replicate similar findings.

1. Missing Header Vulnerability

Missing security headers like X-Frame-Options, Content-Security-Policy, or `Strict-Transport-Security` can expose websites to attacks. Here’s how to check for missing headers using cURL:

curl -I https://example.com

Output Analysis:

  • Look for missing headers like:
    – `X-Frame-Options: DENY` (prevents clickjacking)
    – `Content-Security-Policy: frame-ancestors ‘none’` (restricts framing)
    – `Strict-Transport-Security: max-age=31536000; includeSubDomains` (enforces HTTPS)

Python Script to Check Headers:

import requests

def check_headers(url):
response = requests.head(url)
headers = response.headers
required_headers = ["X-Frame-Options", "Content-Security-Policy", "Strict-Transport-Security"]

for header in required_headers:
if header not in headers:
print(f"Missing Header: {header}")

check_headers("https://example.com")

2. Missing Anti-Framing Policy

Anti-framing policies prevent your site from being embedded in iframes, which can mitigate clickjacking attacks. Use the following Content Security Policy (CSP) to enforce this:

[http]
Content-Security-Policy: frame-ancestors ‘self’;
[/http]

Testing Anti-Framing Policy:

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