Tale of XSS in Angular

Hello Security Researchers and Hackers

In this writeup I explain how I found 2 rXSS vulnerabilities in Angular using automation.

Tools Used

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• Findomain for subdomain monitoring
• Wappalyzer for technology detection

Discovery Process

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1. Received Telegram alert for new subdomains

2. Identified Angular 1.6 using Wappalyzer

3. Found reflected error parameter:

   https://redacted.com/Home/Error?error=USER_NOT_AUTHORIZED

Exploitation

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Used payload from PayloadsAllTheThings:

Key Takeaways

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• Demonstrate concrete impact for better severity rating
• Automate monitoring for fresh targets
• Know framework-specific vulnerabilities