Rate Limit Bypass via Header Spoofing in AVideo

Executive Summary

WWBN AVideo does not validate trusted proxies before accepting X-Real-IP and X-Forwarded-For headers. This allows attackers to spoof client addresses used by enforceRateLimit(). By rotating header values per request, attackers can bypass login rate limiting and perform unlimited credential guessing attacks.

Useful 0 Not Useful 0

Detection Guidance

To detect this vulnerability, monitor HTTP headers like X-Real-IP and X-Forwarded-For for inconsistent or spoofed client addresses. Check if rate limiting is bypassed despite multiple login attempts from the same source. Inspect AVideo server logs for unusual patterns in header values.

Useful 0 Not Useful 0

Impact Analysis

Attackers could exploit this to bypass login rate limits, enabling brute force or credential stuffing attacks. This may lead to unauthorized access to user accounts, data breaches, or service disruptions if login attempts are not properly restricted.

Useful 0 Not Useful 0

Compliance Impact

This vulnerability could lead to unauthorized access attempts bypassing rate limiting, potentially enabling brute force attacks. This may violate data protection requirements under GDPR and HIPAA by exposing user credentials or sensitive data through insufficient access controls.

Useful 0 Not Useful 0

Mitigation Strategies

Update AVideo to the latest version that fixes the header validation issue. Configure trusted proxies properly in your web server or application to validate X-Real-IP and X-Forwarded-For headers before processing.

Useful 0 Not Useful 0