math2-platform/docs/SECURITY.md

Security Policy

Reporting a Vulnerability

If you discover a security vulnerability within this project:

1. DO NOT open a public issue
2. Send an email to security@mathplatform.com
3. Include detailed steps to reproduce
4. Provide potential impact assessment
5. Allow 48 hours for initial response

Security Measures Implemented

Authentication

• ✅ JWT with explicit HS256 algorithm
• ✅ Refresh tokens with blacklist (Redis)
• ✅ Password hashing with bcrypt (cost 12)
• ✅ Rate limiting on login (5 attempts/15 min)
• ✅ Account lockout after failed attempts
• ✅ Secure session management

Authorization

• ✅ RBAC with roles USER/TEACHER/ADMIN
• ✅ Middleware requireAdmin for sensitive routes
• ✅ Resource ownership verification
• ✅ Permission-based access control
• ✅ API key authentication for services

Web Protection

• ✅ XSS Protection:

  • DOMPurify for LaTeX sanitization
  • Content Security Policy headers
  • X-Frame-Options: DENY
  • XSS filter in Helmet.js

• ✅ CSRF Protection:

  • CSRF tokens in forms
  • Origin header validation
  • SameSite cookie policy
  • Double-submit cookie pattern

• ✅ SQL Injection:

  • Prisma ORM exclusive use
  • No raw queries without validation
  • Parameterized queries
  • Input sanitization

• ✅ Rate Limiting:

  • Express-rate-limit + Redis
  • IP-based limiting
  • User-based limiting
  • Endpoint-specific limits

Infrastructure Security

• ✅ Docker containers run as non-root user
• ✅ Secrets stored in Docker Secrets / Vault
• ✅ SSL/TLS with Let's Encrypt
• ✅ Security headers (HSTS, CSP, X-Frame-Options)
• ✅ Network isolation between services
• ✅ Resource limits on containers

Data Protection

• ✅ AES-256 encryption for sensitive data
• ✅ Environment variables for secrets
• ✅ No secrets in code or logs
• ✅ Secure backup encryption
• ✅ Data retention policies
• ✅ Secure data deletion

Compliance

GDPR

• ✅ Data encryption at rest and in transit
• ✅ Right to erasure implemented
• ✅ Data portability (/api/user/export)
• ✅ Consent management
• ✅ Data breach notification procedures
• ✅ Privacy by design

OWASP Top 10

Risk	Mitigation	Status
A01: Broken Access Control	RBAC, middleware auth, ownership checks	✅ Mitigated
A02: Cryptographic Failures	bcrypt (cost 12), AES-256, TLS 1.3	✅ Mitigated
A03: Injection	Prisma ORM, Zod validation, prepared statements	✅ Mitigated
A04: Insecure Design	Security by design, threat modeling	✅ Mitigated
A05: Security Misconfiguration	Docker hardening, security headers	✅ Mitigated
A06: Vulnerable Components	npm audit, Dependabot, SBOM	✅ Mitigated
A07: Auth Failures	JWT best practices, refresh tokens	✅ Mitigated
A08: Software Integrity	Code signing, supply chain security	✅ Mitigated
A09: Logging Failures	Structured logging, correlation IDs	✅ Mitigated
A10: SSRF	Input validation, URL parsing	✅ Mitigated

Security Headers

// Helmet.js configuration
app.use(helmet({
  contentSecurityPolicy: {
    directives: {
      defaultSrc: ["'self'"],
      styleSrc: ["'self'", "'unsafe-inline'", "https://cdn.jsdelivr.net"],
      scriptSrc: ["'self'"],
      imgSrc: ["'self'", "data:", "https:"],
      connectSrc: ["'self'", "https://api.mathplatform.com"],
      fontSrc: ["'self'", "https://cdn.jsdelivr.net"],
      objectSrc: ["'none'"],
      mediaSrc: ["'self'"],
      frameSrc: ["'none'"],
    },
  },
  hsts: {
    maxAge: 31536000,
    includeSubDomains: true,
    preload: true
  },
  xssFilter: true,
  noSniff: true,
  referrerPolicy: { policy: "same-origin" }
}));

Security Checklist

Development

• No secrets in code
• Input validation on all endpoints
• Output encoding for dynamic content
• CSRF tokens on state-changing operations
• Secure cookie settings
• Security unit tests

Deployment

• HTTPS only
• Security headers configured
• Rate limiting enabled
• WAF configured (if applicable)
• Container security scanning
• Secrets management
• Network policies
• Resource quotas

Monitoring

• Security logging enabled
• Failed login attempts monitoring
• Unusual traffic patterns detection
• Dependency vulnerability scanning
• Regular security audits

Incident Response

Severity Levels

1. Critical: Active exploitation, data breach
2. High: Potential vulnerability, no known exploitation
3. Medium: Security weakness, low risk
4. Low: Best practice violation

Response Procedures

1. Detection: Automated alerts, user reports
2. Assessment: Impact evaluation, scope determination
3. Containment: Isolate affected systems
4. Investigation: Root cause analysis
5. Remediation: Fix implementation
6. Recovery: Restore normal operations
7. Lessons Learned: Post-incident review

Communication

• Internal team notification within 1 hour
• User notification for data breaches within 72 hours
• Public disclosure after fix deployment
• Coordination with security researchers

Secure Coding Guidelines

Input Validation

// ✅ Good - Use Zod for validation
const loginSchema = z.object({
  email: z.string().email(),
  password: z.string().min(8).max(100)
});

// ❌ Bad - No validation
app.post('/login', (req, res) => {
  const { email, password } = req.body;
  // Process without validation
});

Output Encoding

// ✅ Good - Sanitize output
import DOMPurify from 'dompurify';
const sanitized = DOMPurify.sanitize(userInput);

// ❌ Bad - Direct output
res.send(userInput); // XSS vulnerability

Authentication

// ✅ Good - Secure JWT implementation
const token = jwt.sign(
  { userId: user.id },
  process.env.JWT_SECRET,
  { 
    algorithm: 'HS256',
    expiresIn: '15m',
    issuer: 'math-platform'
  }
);

// ❌ Bad - Weak JWT
const token = jwt.sign({ userId: user.id }, 'secret');

Password Storage

// ✅ Good - bcrypt with proper cost
const hash = await bcrypt.hash(password, 12);
const valid = await bcrypt.compare(password, hash);

// ❌ Bad - No hashing or weak hashing
const hash = md5(password); // ❌

Security Tools

Static Analysis

• ESLint Security Plugin: Detects security anti-patterns
• SonarQube: Continuous security inspection
• Snyk: Dependency vulnerability scanning
• GitHub Advanced Security: Secret scanning

Dynamic Analysis

• OWASP ZAP: Web application security testing
• Burp Suite: Manual security testing
• Playwright Security Tests: Automated security tests

Infrastructure

• Trivy: Container image scanning
• Docker Bench: Docker security audit
• Kube-bench: Kubernetes security checks

Contact

• Security Team: security@mathplatform.com
• Bug Bounty: https://mathplatform.com/security
• PGP Key: Available on Keybase

Updates

This security policy is reviewed quarterly and updated as needed. Last updated: March 2024.