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Charon/docs/issues/Additional_Security.md

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Additional Security Threats to Consider

1. Supply Chain Attacks

  • Threat: Compromised Docker images, npm packages, Go modules
  • Current Protection: None
  • Recommendation: Add Trivy scanning (already in CI) + SBOM generation

2. DNS Hijacking / Cache Poisoning

  • Threat: Attacker redirects DNS queries to malicious servers
  • Current Protection: None (relies on system DNS resolver)
  • Recommendation: Document use of encrypted DNS (DoH/DoT) in deployment guide

3. TLS Downgrade Attacks

  • Threat: Force clients to use weak TLS versions
  • Current Protection: Caddy enforces TLS 1.2+ by default
  • Recommendation: Document minimum TLS version in security.md

4. Certificate Transparency (CT) Log Poisoning

  • Threat: Attacker registers fraudulent certs for your domains
  • Current Protection: None
  • Recommendation: Add CT log monitoring (future feature)

5. Privilege Escalation (Container Escape)

  • Threat: Attacker escapes Docker container to host OS
  • Current Protection: ⚠️ Partial (Docker security best practices)
  • Recommendation: Document running with least-privilege, read-only root filesystem

6. Session Hijacking / Cookie Theft

  • Threat: Steal user session tokens via XSS or network sniffing
  • Current Protection: HTTPOnly cookies, Secure flag, SameSite (verify implementation)
  • Recommendation: Add CSP (Content Security Policy) headers

7. Timing Attacks (Cryptographic Side-Channel)

  • Threat: Infer secrets by measuring response times
  • Current Protection: Unknown (need bcrypt timing audit)
  • Recommendation: Use constant-time comparison for tokens

Enterprise-Level Security Gaps:

  • Missing: Security Incident Response Plan (SIRP)
  • Missing: Automated security update notifications
  • Missing: Multi-factor authentication (MFA) for admin accounts
  • Missing: Audit logging for compliance (GDPR, SOC 2)