Simplenote MCP Server

# Security Policy ## 🔒 Security Statement The Simplenote MCP Server project takes security seriously. We are committed to providing a secure platform for note management and maintaining the confidentiality, integrity, and availability of user data. ## 🚨 Reporting Security Vulnerabilities **Please do not report security vulnerabilities through public GitHub issues.** Instead, please report security issues responsibly: ### Primary Contact - **Email**: docdyhr@me.com - **Subject**: [SECURITY] Simplenote MCP Server - Vulnerability Report - **Response Time**: We aim to acknowledge reports within 24 hours ### What to Include Please include the following information in your report: - Description of the vulnerability - Steps to reproduce the issue - Potential impact assessment - Suggested mitigation (if known) - Your contact information for follow-up ### Security Team Response 1. **Acknowledgment** - Within 24 hours 2. **Initial Assessment** - Within 48 hours 3. **Detailed Analysis** - Within 5 business days 4. **Resolution Plan** - Within 10 business days 5. **Security Update** - As soon as safely possible ## 🛡️ Supported Versions We provide security updates for the following versions: | Version | Supported | End of Support | | ------- | ------------------ | -------------- | | 1.9.x | ✅ Yes | TBD | | 1.8.x | ✅ Yes | 2025-04-01 | | 1.7.x | ⚠️ Critical only | 2025-02-01 | | < 1.7 | ❌ No | 2025-01-01 | ## 📊 Security Monitoring For detailed information about our automated security monitoring and maintenance procedures, see [Security Monitoring Guide](docs/SECURITY_MONITORING.md). **Key Features**: - Automated dependency scanning with Dependabot - CVE scanning with pip-audit in CI/CD - Static analysis with Bandit and CodeQL - Weekly security scans - 24-hour response time for critical issues ## 🔐 Security Features ### Input Validation & Sanitization - **Comprehensive Input Validation**: All MCP tool inputs are validated using our security validation system - **XSS Prevention**: Input sanitization prevents cross-site scripting attacks - **SQL Injection Prevention**: Parameterized queries and input validation prevent SQL injection - **Path Traversal Protection**: File path validation prevents directory traversal attacks - **Command Injection Prevention**: Input filtering blocks command injection attempts ### Rate Limiting & DoS Protection - **Request Rate Limiting**: 100 requests per 5-minute window per client - **Progressive Penalties**: Automatic blocking for repeated violations - **Burst Protection**: Token bucket algorithm prevents traffic spikes - **Resource Limits**: Memory and processing time limits prevent resource exhaustion ### Authentication & Authorization - **Session Management**: Secure session tokens with configurable timeouts - **Failed Authentication Tracking**: Progressive blocking for failed login attempts - **Client Validation**: Client ID verification for session security - **Credential Protection**: Secure handling of Simplenote credentials ### Data Protection - **Sensitive Data Redaction**: Automatic sanitization of logs and outputs - **Secure Transmission**: HTTPS/TLS for all external communications - **Memory Protection**: Secure handling of sensitive data in memory - **Log Security**: Comprehensive security event logging without exposing secrets ### Supply Chain Security - **Dependency Pinning**: Exact version pinning with SHA256 checksums - **Vulnerability Scanning**: Automated scanning using OSV and Safety databases - **SBOM Generation**: Software Bill of Materials for transparency - **License Compliance**: Automated license compliance checking ## 📋 Security Architecture ### Security Layers 1. **Network Layer**: TLS encryption, secure protocols 2. **Application Layer**: Input validation, rate limiting, authentication 3. **Data Layer**: Encryption at rest, secure data handling 4. **Monitoring Layer**: Security event logging, anomaly detection ### Security Controls - **Preventive**: Input validation, authentication, authorization - **Detective**: Security monitoring, anomaly detection, audit logging - **Corrective**: Incident response, automatic blocking, rate limiting - **Recovery**: Backup procedures, disaster recovery planning ## 🔍 Security Testing ### Automated Security Testing - **Static Analysis**: Bandit security linting on every commit - **Dependency Scanning**: Automated vulnerability scanning in CI/CD - **Code Quality**: Comprehensive test coverage with security test cases - **Container Scanning**: Docker image vulnerability scanning ### Manual Security Testing - **Penetration Testing**: Quarterly security assessments - **Code Review**: Security-focused code review process - **Threat Modeling**: Regular threat model updates - **Security Audits**: Annual third-party security audits ## 📊 Security Monitoring ### Real-Time Monitoring - **Security Events**: Failed authentication attempts, rate limit violations - **Anomaly Detection**: Unusual usage patterns, suspicious requests - **Performance Monitoring**: Resource usage, response time tracking - **Error Tracking**: Security-related errors and exceptions ### Security Metrics - **Authentication Failures**: Failed login attempts per hour/day - **Rate Limit Violations**: Number of clients hitting rate limits - **Input Validation Failures**: Blocked malicious inputs - **Vulnerability Exposure**: Open security issues and resolution time ## 🚨 Incident Response ### Incident Classification - **Critical**: Data breach, system compromise, service unavailability - **High**: Privilege escalation, authentication bypass - **Medium**: Information disclosure, denial of service - **Low**: Security configuration issues, minor vulnerabilities ### Response Timeline - **Critical**: Immediate response (within 1 hour) - **High**: Within 4 hours - **Medium**: Within 24 hours - **Low**: Within 72 hours ### Response Process 1. **Detection**: Automated alerts or manual reporting 2. **Assessment**: Severity evaluation and impact analysis 3. **Containment**: Immediate steps to limit damage 4. **Investigation**: Root cause analysis and evidence collection 5. **Resolution**: Implement fixes and verify effectiveness 6. **Communication**: Notify affected users and stakeholders 7. **Documentation**: Post-incident review and lessons learned ## 🔧 Security Configuration ### Environment Variables ```bash # Security Configuration SIMPLENOTE_EMAIL=your-email@example.com SIMPLENOTE_PASSWORD=your-secure-password SIMPLENOTE_OFFLINE_MODE=false # Session Configuration SESSION_TIMEOUT=3600 # 1 hour MAX_FAILED_ATTEMPTS=5 RATE_LIMIT_WINDOW=300 # 5 minutes RATE_LIMIT_MAX_REQUESTS=100 # Logging Configuration LOG_LEVEL=INFO SECURITY_LOG_LEVEL=WARNING AUDIT_LOG_ENABLED=true ``` ### Docker Security ```bash # Run with non-root user docker run --user mcp:mcp \ --read-only \ --tmpfs /tmp \ --cap-drop ALL \ --security-opt no-new-privileges \ simplenote-mcp-server ``` ## 📚 Security Best Practices ### For Users - **Strong Credentials**: Use strong, unique passwords for Simplenote - **Environment Security**: Secure your environment variables and configuration files - **Regular Updates**: Keep the MCP server updated to the latest version - **Network Security**: Use TLS/HTTPS for all communications - **Monitoring**: Monitor logs for suspicious activity ### For Developers - **Secure Coding**: Follow secure coding practices and guidelines - **Input Validation**: Validate and sanitize all inputs - **Error Handling**: Handle errors securely without information disclosure - **Dependency Management**: Keep dependencies updated and scan for vulnerabilities - **Testing**: Include security test cases in all code changes ### For Operators - **Infrastructure Security**: Secure the deployment environment - **Access Controls**: Implement proper access controls and monitoring - **Backup Security**: Secure backups and test recovery procedures - **Incident Preparedness**: Have incident response procedures ready - **Regular Audits**: Conduct regular security audits and assessments ## 🔗 Security Resources ### External Resources - [OWASP Top 10](https://owasp.org/www-project-top-ten/) - [CWE Top 25](https://cwe.mitre.org/top25/) - [NIST Cybersecurity Framework](https://www.nist.gov/cyberframework) - [Python Security Guidelines](https://python-security.readthedocs.io/) ### Security Tools - [Bandit](https://bandit.readthedocs.io/) - Python security linter - [Safety](https://pyup.io/safety/) - Dependency vulnerability scanner - [OSVIG](https://osv.dev/) - Open source vulnerability database - [CodeQL](https://codeql.github.com/) - Semantic code analysis ## 📅 Security Review Schedule ### Regular Reviews - **Daily**: Automated security scanning and monitoring - **Weekly**: Security log review and incident analysis - **Monthly**: Security metrics review and trending analysis - **Quarterly**: Penetration testing and vulnerability assessment - **Annually**: Comprehensive security audit and policy review ### Version-Based Reviews - **Major Releases**: Complete security review and threat model update - **Minor Releases**: Security impact assessment and testing - **Patch Releases**: Security-focused testing for critical fixes ## 🏅 Security Acknowledgments We acknowledge and thank the following individuals and organizations for their contributions to the security of the Simplenote MCP Server: - Security researchers who responsibly disclose vulnerabilities - Open source security tools and communities - The Python security community - The MCP (Model Context Protocol) security working group ## 📖 Changelog ### 2024-07-27 - Version 1.6.0 - ✅ Implemented comprehensive input validation system - ✅ Added rate limiting and request validation middleware - ✅ Enhanced dependency management with pinned versions and checksums - ✅ Automated security scanning in CI/CD pipeline - ✅ Security monitoring and alerting system ### 2024-07-19 - Security Hardening - ✅ Fixed clear-text logging of sensitive information (CWE-312/359/532) - ✅ Fixed incomplete URL substring sanitization (CWE-020) - ✅ Fixed missing GitHub Actions workflow permissions (CWE-275) - ✅ Implemented principle of least privilege - ✅ Enhanced input validation and error handling --- **Last Updated**: 2024-07-27 **Next Review**: 2024-10-27 **Version**: 1.6.0 For questions about this security policy, please contact: docdyhr@me.com