narrow_casting_system/docs/SECURITY_CONSIDERATIONS.md

Security Considerations for SnowWorld Narrowcasting System

🔒 Current Security Status

Known Vulnerabilities

SQLite3 Dependencies

The current implementation uses sqlite3@5.1.7 which has some known security vulnerabilities in its dependency chain:

• tar package vulnerability: CVE related to arbitrary file overwrite
• Impact: Low to medium risk for this specific use case
• Status: Being monitored and will be addressed in future updates

Mitigation Strategies

1. Input Validation: All user inputs are validated and sanitized
2. File Upload Security: Strict file type and size validation
3. Path Traversal Protection: Proper path sanitization
4. SQL Injection Prevention: Parameterized queries used throughout

Recommended Security Measures

For Production Deployment

1. Use Better-sqlite3 (Recommended Alternative)

   // Replace sqlite3 with better-sqlite3
   // npm install better-sqlite3
   
   // In DatabaseManager.js:
   const Database = require('better-sqlite3');
   

2. Implement Rate Limiting

   // Add to server.js
   const rateLimit = require('express-rate-limit');
   const limiter = rateLimit({
     windowMs: 15 * 60 * 1000, // 15 minutes
     max: 100 // limit each IP to 100 requests per windowMs
   });
   app.use('/api', limiter);
   

3. Add Helmet.js for Security Headers

   const helmet = require('helmet');
   app.use(helmet());
   

4. Implement Input Validation Library

   const { body, validationResult } = require('express-validator');
   
   app.post('/api/content/upload',
     body('title').isLength({ min: 1, max: 255 }),
     body('zone').isIn(['reception', 'restaurant', 'skislope', 'lockers', 'shop']),
     (req, res) => {
       const errors = validationResult(req);
       if (!errors.isEmpty()) {
         return res.status(400).json({ errors: errors.array() });
       }
       // Process upload...
     }
   );
   

Security Checklist for Production

Network Security

• Use HTTPS with valid SSL certificates
• Implement proper firewall rules
• Use a reverse proxy (nginx) with security headers
• Enable CORS only for trusted domains

Application Security

• Validate all user inputs
• Sanitize file uploads
• Use parameterized SQL queries
• Implement proper error handling (don't expose sensitive info)
• Add rate limiting to prevent abuse

File System Security

• Restrict upload file types and sizes
• Store uploads outside web root when possible
• Implement file name sanitization
• Use proper file permissions

Database Security

• Use strong database passwords
• Implement database connection limits
• Regular database backups
• Monitor for suspicious queries

Immediate Actions Required

1. Update Dependencies (Recommended)

# For better security, consider using better-sqlite3 instead of sqlite3
npm install better-sqlite3
# Then update DatabaseManager.js to use better-sqlite3

2. Add Security Middleware

npm install express-rate-limit helmet express-validator

3. Environment Variables Security

# Generate strong secrets
openssl rand -base64 32
# Add to .env file
SESSION_SECRET=your-generated-secret
JWT_SECRET=your-generated-jwt-secret

Monitoring and Maintenance

Regular Security Tasks

1. Weekly: Check for npm security advisories
2. Monthly: Update dependencies
3. Quarterly: Security audit and penetration testing
4. Annually: Full security review

Security Monitoring

• Log all authentication attempts
• Monitor file upload patterns
• Track database query performance
• Set up alerts for suspicious activity

Incident Response Plan

If Security Issues Are Discovered

1. Immediate: Isolate affected systems
2. Assessment: Determine scope and impact
3. Notification: Inform stakeholders
4. Remediation: Fix vulnerabilities
5. Verification: Test fixes thoroughly
6. Documentation: Document lessons learned

🛡️ Future Security Enhancements

Planned Improvements

1. Authentication System: Add JWT-based authentication
2. Role-Based Access Control: Implement user roles and permissions
3. Content Moderation: Add approval workflows for content
4. Audit Logging: Comprehensive audit trail
5. Encryption: Encrypt sensitive data at rest

Security Tools Integration

• Snyk: For dependency vulnerability scanning
• OWASP ZAP: For penetration testing
• SonarQube: For code quality and security analysis

---

Note: While the current sqlite3 dependencies have some known vulnerabilities, the risk is relatively low for this specific use case due to:

• Limited file system access
• Input validation implemented
• No direct user input to database queries
• Controlled environment deployment

However, for production environments, consider migrating to better-sqlite3 or another database solution with better security track record.