Timing Attacks Against PHP Login Endpoints — How Real and How to Fix
📰 Medium · Programming
Learn how to fix timing attacks against PHP login endpoints by verifying password hashes for all users
Action Steps
- Check your PHP login endpoint for timing attack vulnerabilities
- Use password_verify for all users, not just known ones
- Implement a constant-time comparison function
- Test your updated login endpoint for security
Who Needs to Know This
Backend developers and security teams can benefit from this knowledge to protect their PHP applications from timing attacks
Key Insight
💡 Timing attacks can be used to enumerate accounts via response time, but can be fixed by using password_verify for all users
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🚨 Protect your PHP login endpoint from timing attacks! 🚨
Key Takeaways
Learn how to fix timing attacks against PHP login endpoints by verifying password hashes for all users
Full Article
If your login skips password_verify for unknown users, attackers can enumerate accounts via response time. Verified fix in 4 lines. Continue reading on Medium »
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