TerraGuard: Security Validation for Terraform Configurations

TerraGuard is a Python-based security validation tool that helps developers identify potential security issues in their Terraform configurations before deployment. Think of it as a friendly security guard that reads through your Terraform files and points out potential security problems before they become real issues.

Features

TerraGuard analyzes your Terraform configurations for common security issues including:

• S3 bucket misconfigurations (public access, missing encryption)
• Network security risks (open security groups, exposed ports)
• IAM security concerns (overly permissive policies, hardcoded credentials)
• Database vulnerabilities (public access, missing encryption)
• API Gateway security issues
• Container and Kubernetes security risks
• Cloud service configuration problems

The tool provides both console output with color-coded findings and detailed HTML reports with remediation suggestions.

Installation

1. Clone the repository:

git clone https://github.com/yourusername/terraguard.git
cd terraguard

2. Create a virtual environment (recommended):

python -m venv venv
source venv/bin/activate  # On Windows: venv\Scripts\activate

3. Install dependencies:

pip install -r requirements.txt

Usage

Basic Usage

To scan a single Terraform file:

python src/main.py path/to/your/terraform/file.tf

The tool will generate:

• Console output with color-coded findings
• An HTML report in the reports/ directory

Example Output

Console output includes:

• Total number of findings
• Findings by severity (CRITICAL, HIGH, MEDIUM, LOW)
• Detailed description of each issue
• Suggested fixes

HTML reports provide:

• Comprehensive security analysis
• Statistics and metrics
• Detailed findings with code snippets
• Remediation recommendations

Security Rules

TerraGuard implements various security rules across different categories:

S3 Bucket Security

• Encryption validation
• Public access checks
• Logging configuration verification

Network Security

• Security group analysis
• VPC configuration validation
• Port exposure detection

IAM Security

• Policy permission analysis
• Role configuration validation
• Credential exposure checks
• Password policy verification

Database Security

• Access control validation
• Encryption verification
• Backup configuration checks

Container and Kubernetes Security

• ECS task definition validation
• EKS cluster security checks
• DynamoDB configuration analysis

Testing

Run the test suite:

python -m unittest discover tests

Project Structure

terraguard/
├── src/
│   ├── parser/          # Terraform file parsing
│   ├── rules/           # Security rule definitions
│   └── report/          # Report generation
├── tests/               # Test suite
├── examples/            # Example Terraform files
└── reports/            # Generated security reports

Example Files

The examples/ directory contains sample Terraform configurations demonstrating both secure and insecure practices:

• api_gateway_example.tf: API Gateway configurations
• cloud_services_example.tf: Various cloud service setups
• container_db_example.tf: Container and database configurations
• database_example.tf: Database configurations
• iam_example.tf: IAM policies and roles
• network_example.tf: Network security configurations
• secure_example.tf: Secure configuration examples
• insecure_example.tf: Examples of security issues

Contributing

Contributions are welcome! Here's how you can help:

1. Fork the repository
2. Create a feature branch
3. Commit your changes
4. Push to the branch
5. Create a Pull Request

Please ensure your code includes appropriate tests and documentation.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Acknowledgments

Special thanks to the security community and Terraform developers who have documented common security issues and best practices that this tool helps identify.

Future Enhancements

While the current version is fully functional, future enhancements could include:

• Custom rule creation support
• Configuration file for rule customization
• CI/CD pipeline integration
• Real-time scanning capabilities
• Enhanced performance metrics
• Additional cloud provider support

Contact

For bugs, feature requests, or questions, please open an issue in the GitHub repository.