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ProxyHawk TODO List

Last updated: 2026-02-10

✅ Completed Tasks (v1.5.1)

Priority 2 Advanced SSRF Checks

  • Implement SNI Proxy SSRF tests (TLS SNI field manipulation)
  • Implement real DNS rebinding tests (using public rebinding services)
  • Implement HTTP/2 header injection tests (CRLF in binary headers)
  • Implement AWS IMDSv2 token workflow bypass tests
  • Add 4 new fields to AdvancedSSRFResult struct
  • Integrate Priority 2 checks into performAdvancedSSRFChecks()
  • Update test summary to count new checks (+22 test cases)
  • Create vulns_ssrf_advanced_priority2.go (400+ lines)
  • Test against Nginx Kubernetes Gateway
  • Document implementation in V1.5.1_PRIORITY2_IMPLEMENTATION.md

✅ Completed Tasks (v1.5.0)

Advanced SSRF Vulnerability Checks

  • Implement URL Parser Differential tests (Orange Tsai research)
    • 13 parser confusion patterns (@, backslash, null bytes, encoding)
  • Implement IP Obfuscation Bypass tests
    • 15+ IP representation formats (decimal, octal, hex, abbreviated)
  • Implement Redirect Chain SSRF tests
    • 3 scenarios targeting AWS/GCP metadata and localhost
  • Implement Protocol Smuggling tests
    • 9 non-HTTP protocol schemes (file://, gopher://, dict://, etc.)
  • Implement Header Injection SSRF tests
    • 40 combinations (10 headers × 4 internal targets)
  • Implement Nginx proxy_pass Traversal tests
    • 7 path traversal patterns
  • Implement Host Header SSRF tests
    • 5 internal host targets
  • Create vulns_ssrf_advanced.go (700+ lines)
  • Add AdvancedSSRFResult struct to types.go
  • Integrate advanced SSRF checks into checker.go fallback logic
  • Add test summary logging to show all checks performed
  • Create SECURITY_RESEARCH_ANALYSIS.md
  • Create V1.5.0_IMPLEMENTATION_SUMMARY.md
  • Test against Nginx Kubernetes Gateway (10.176.17.250)

Fallback Mode Implementation

  • Modify checker.go to fallback if proxy connection fails
  • Add performDirectScan() function for direct vulnerability testing
  • Integrate all 55 standard vulnerability checks into fallback
  • Integrate advanced SSRF checks into fallback
  • Test all modes (basic, intense, vulns) with fallback

✅ Completed Tasks (v1.4.0)

Path-Based Fingerprinting Implementation

  • Implement path-based fingerprinting for reverse proxies and API gateways
  • Add direct HTTP request capability (not through proxy)
  • Test multiple paths (/, /admin, /api, /v1, etc.) - 20 default paths
  • Compare server headers across different paths
  • Detect backend routing/rewriting from header differences
  • Identify proxy software from error page content (when Server header is hidden)
  • Detect backend frameworks (Django, Flask, Spring, Rails, etc.)
  • Identify routing patterns (API versioning, admin interfaces, health endpoints)
  • Add -path-fingerprint and -paths command-line flags
  • Test against Nginx Kubernetes Gateway (10.176.17.250)
  • Update README.md with path-based fingerprinting documentation

✅ Completed Tasks (v1.3.0)

Configuration System Overhaul

  • Analyze current config structure and identify client vs server configs
  • Create ~/.config/proxyhawk directory structure with XDG compliance
  • Generate comprehensive default client config (config/client/default.yaml)
  • Move server configs to config/server/ directory
  • Move example configs to config/examples/ directory
  • Update old default.yaml to symlink to new client config
  • Implement config initialization in cmd/proxyhawk/main.go
    • Auto-generates ~/.config/proxyhawk/config.yaml on first run
    • Follows XDG Base Directory specification
    • Provides helpful user feedback
  • Test build to ensure no compilation errors
  • Update config/README.md for new structure
    • Complete documentation of all config files
    • Usage examples for common scenarios
    • Security best practices
    • Troubleshooting guide

Vulnerability Scanning Implementation (COMPLETE - 55/55 checks)

  • Implement Priority 1 (Critical) vulnerability checks
    • Nginx CVE-2025-1974, WebSocket abuse, HTTP/2 smuggling
  • Implement Priority 2 (High-Impact) vulnerability checks
    • 10 checks for generic misconfigurations
  • Implement Priority 3 (Extended) vulnerability checks
    • 12 checks for Nginx/Apache (cache bypass, auth bypass, CVEs, SSRF, htaccess)
  • Implement Priority 4 (Vendor-Specific) vulnerability checks
    • 20+ checks for HAProxy, Squid, Traefik, Envoy, Caddy, Varnish, F5 BIG-IP, Nginx Plus
  • Complete all 55 vulnerability checks (100% coverage)
  • Update VERSION to 1.3.0
  • Update README with full vulnerability documentation

📋 Current Status

Configuration Structure

config/
├── client/              # ProxyHawk CLI configurations
│   └── default.yaml     # Comprehensive default (auto-copied to ~/.config/)
├── server/              # ProxyHawk Server configurations
│   ├── server.default.yaml
│   ├── server.example.yaml
│   ├── production.yaml
│   └── development.yaml
├── examples/            # Feature-specific examples
│   ├── auth-example.yaml
│   ├── connection-pool-example.yaml
│   ├── discovery-example.yaml
│   ├── metrics-example.yaml
│   ├── retry-example.yaml
│   ├── multi-host.example.yaml
│   └── proxy-chaining.yaml
├── default.yaml         # Symlink to client/default.yaml
└── README.md            # Complete configuration guide

User Experience

  • ✅ First run automatically creates ~/.config/proxyhawk/config.yaml
  • ✅ Config precedence: CLI flags > Environment variables > User config > Defaults
  • ✅ Clear logging when config is created or loaded
  • ✅ XDG Base Directory compliant
  • ✅ All 55 vulnerability checks available and documented

🚀 Future Enhancements

High Priority (Next Release - v1.5.2 Config Improvements)

  • Make config file optional (like Nuclei) - see CONFIG_IMPROVEMENTS_NEEDED.md
  • Implement config merging (defaults → user config → CLI flags)
  • Create internal/config/defaults.go with built-in defaults
  • Create internal/config/merge.go for config merging
  • Move validation warning to AFTER mode overrides
  • Make test summary always visible via logger (not just DebugInfo)
  • Add unit tests for config initialization logic
  • Add integration tests for vulnerability checks
  • Performance benchmarks for vuln scanning
  • Docker test environments for vulnerable services

Medium Priority

  • Config migration tool for users with old config files
  • Interactive config wizard (proxyhawk --configure)
  • Config diff tool to show what changed between versions
  • Web UI for config management
  • Automated exploit chain discovery (path traversal → RCE)

Low Priority

  • Config templates for specific use cases (pentesting, monitoring, CI/CD)
  • Config backup/restore functionality
  • Config export to other formats (JSON, TOML)
  • Machine learning-based proxy fingerprinting
  • Integration with Metasploit modules
  • Custom Nuclei template import

🐛 Known Issues

None currently identified.

📝 Notes

  • Configuration system now follows best practices
  • User configs are isolated from repository configs
  • Server and client configs are clearly separated
  • All 55 standard vulnerability checks implemented
  • v1.5.0: 7 advanced SSRF checks (92 test cases) implemented
  • v1.5.1: 4 Priority 2 SSRF checks (22 test cases) implemented
  • Total: 11 advanced SSRF checks with 114 test cases
  • Config system improvements needed (see CONFIG_IMPROVEMENTS_NEEDED.md)
  • Ready for v1.5.1 release (pending config improvements)

🔗 Related Files

📊 Project Statistics

  • Version: 1.5.1
  • Standard Vulnerability Checks: 55 (complete)
  • Advanced SSRF Checks: 11 (114 test cases)
    • v1.5.0: 7 checks (92 test cases)
    • v1.5.1: 4 checks (22 test cases)
  • Total HTTP Requests in vulns mode: ~264
  • Configuration Files: 13 (organized by purpose)
  • Lines of Vulnerability Code: ~5,000+
  • Supported Platforms: Linux, macOS, Windows
  • Supported Protocols: HTTP, HTTPS, HTTP/2, HTTP/3, SOCKS4, SOCKS5