Security Infrastructure MCP Server

Security Infrastructure MCP Servers

A comprehensive collection of secure MCP (Model Context Protocol) server implementations for security platform integrations with enterprise-grade security hardening.

🛡️ Security-First Design

This project has undergone comprehensive security hardening to address critical vulnerabilities and implement security best practices:

✅ Security Improvements (Latest Update)

🔴 HIGH Severity Fixes:
- SPL injection prevention with query sanitization and dangerous command blocking
- Secure XML parsing using defusedxml to prevent XXE attacks
- Complete removal of hardcoded credentials from all configuration files
🟡 MEDIUM Severity Fixes:
- Enforced TLS 1.2+ with strong cipher suites for all API communications
- Comprehensive input validation and sanitization across all servers
- Prevention of command execution risks and injection attacks
- Error message sanitization to prevent information disclosure
🔵 Additional Security Features:
- FQL/SPL injection attack prevention with pattern matching
- SSL certificate validation enforcement
- Data sanitization for API responses
- Secure configuration templates with safe placeholders
- Comprehensive .gitignore to prevent credential exposure

🔒 Security Documentation

See SECURITY.md for comprehensive security guidelines, configuration best practices, and vulnerability reporting procedures.

🔐 Supported Platforms

Splunk SIEM

Secure SPL Query Execution: Execute Search Processing Language queries with injection prevention
Event Search: Search security events across all indexes with sanitized filtering
Time-based Analysis: Validated time ranges and custom time windows
Asynchronous Job Management: Create and monitor search jobs with secure result retrieval
JSON Result Format: Structured output with sensitive data filtering

CrowdStrike EDR

Secure Detection Search: Query detections using validated FQL (Falcon Query Language)
Detection Details: Retrieve sanitized detection summaries and metadata
OAuth 2.0 Authentication: Secure API access with proper token management
Input Validation: Comprehensive parameter validation and whitelisting
Real-time Threat Data: Access to latest endpoint detection data with security filtering

Microsoft MISP

Event Search: Query MISP events with input sanitization and validation
IOC Attribute Search: Search indicators with XSS and injection prevention
Multi-format Support: Handle various IOC types with content validation
SSL Security: Enforced certificate verification with security warnings
RESTful API Integration: Secure MISP REST API support with error sanitization

🚀 Quick Start

Installation

# 1. Clone the repository
git clone https://github.com/jmstar85/SecurityInfrastructure.git
cd SecurityInfrastructure

# 2. Install secure dependencies
pip install -r requirements.txt

# 3. Configure credentials securely
cp .env.example .env
# Edit .env with your platform credentials (see security guidelines)

# 4. Add to Claude Desktop configuration
# Copy config-example.json content to your Claude Desktop config
# Location: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS)
# Update paths and environment variables with your secure values

Secure Configuration

# Verify configuration security
python -c "
import json
with open('.env', 'r') as f:
    content = f.read()
    if 'REPLACE_WITH_YOUR' in content:
        print('⚠️  Please update placeholder credentials in .env')
    else:
        print('✅ Configuration appears to be customized')
"

# Test server security
python src/splunk_server.py        # Runs on localhost:8080
python src/crowdstrike_server.py   # Runs on localhost:8081  
python src/misp_server.py          # Runs on localhost:8082

🔧 MCP Server Tools

Splunk SIEM Tools (Security Hardened)

search-events: Execute sanitized SPL queries with injection prevention
# Example: Secure search for failed login attempts query = "index=security sourcetype=auth action=failure" # Automatically sanitized earliest_time = "-24h" # Validated time format

CrowdStrike EDR Tools (Security Hardened)

search-detections: Query detections with FQL validation and whitelisting
# Example: Secure search for high severity detections filter_query = "max_severity:'high'" # Validated against injection patterns sort = "created_timestamp.desc" # Whitelisted sort options only

MISP Tools (Security Hardened)

search-events: Query threat intelligence with input sanitization
search-attributes: Search IOCs with XSS and injection prevention
# Example: Secure search for IP-based IOCs type = "ip-dst" # Input sanitized and validated category = "Network activity" # Content filtered for safety

📁 Optimized Project Structure

SecurityInfrastructure/
├── src/                    # Secure MCP server implementations
│   ├── splunk_server.py    # Splunk SIEM integration (hardened)
│   ├── crowdstrike_server.py # CrowdStrike EDR integration (hardened)
│   └── misp_server.py      # Microsoft MISP integration (hardened)
├── config/                 # Secure configuration templates
│   ├── mcp-settings.json   # MCP client configuration (sanitized)
│   └── splunk.yaml         # Splunk configuration template
├── tests/                  # Security validation tests
├── SECURITY.md             # Security guidelines and best practices
├── config-example.json     # Safe configuration template
├── .env.example            # Environment variables template (secure)
├── .gitignore              # Comprehensive credential protection
├── requirements.txt        # Minimal secure dependencies
├── INSTALLATION.md         # Detailed setup guide
├── setup-guide.md          # Quick setup templates
└── docker-compose.yml      # Container configuration

Note: Frontend components, unnecessary Node.js files, and development artifacts have been removed to minimize attack surface and optimize security posture.

🔧 Secure MCP Client Configuration

Claude Desktop Setup (Secure)

Configuration File Location:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json

Secure Configuration Template:

{
  "mcpServers": {
    "security-infrastructure-splunk": {
      "command": "python",
      "args": ["/FULL/PATH/TO/SecurityInfrastructure/src/splunk_server.py"],
      "env": {
        "SPLUNK_HOST": "REPLACE_WITH_YOUR_SPLUNK_HOST",
        "SPLUNK_TOKEN": "REPLACE_WITH_YOUR_API_TOKEN",
        "SPLUNK_VERIFY_SSL": "true"
      }
    }
  }
}

⚠️ Security Note: Never commit real credentials to version control. Use the provided templates and replace placeholders with actual values.

💻 Secure Usage Examples

Once securely configured with Claude Desktop, you can use natural language to interact with your security platforms:

Splunk SIEM Queries (Injection-Safe)

"Search for failed SSH login attempts in the last 6 hours"
"Find all authentication events from IP 192.168.1.100"  
"Show me high priority security alerts from yesterday"
"Search for events in the security index containing 'malware'"

CrowdStrike EDR Queries (Validated)

"Show me all high severity detections from today"
"Find endpoint detections with behavior patterns"
"List recent detections sorted by creation time"
"Search for detections on specific hostnames"

MISP Threat Intelligence (Sanitized)

"Search for events related to specific threat actors"
"Find all IP address indicators of compromise"
"Look up domain indicators from the last week"
"Search for published threat intelligence events about phishing"

🛠️ Security Features

Core Security Implementations

Input Validation: Comprehensive sanitization and validation of all user inputs
Injection Prevention: Protection against SPL, FQL, SQL, and XSS injection attacks
Secure Communications: Enforced HTTPS/TLS 1.2+ with strong cipher suites
Error Sanitization: Generic error messages to prevent information disclosure
Authentication Security: Secure token/credential handling with proper validation

Security Architecture

Multiple Auth Methods: Session-based, token-based, and OAuth 2.0 with secure defaults
SSL/TLS Enforcement: Mandatory certificate verification for all connections
API Security: Rate limiting, timeout enforcement, and connection pooling limits
Configuration Security: Safe templates, credential masking, and .gitignore protection

Data Protection

Output Sanitization: Removal of sensitive fields from API responses
Credential Management: No hardcoded secrets, environment variable protection
Logging Security: Sensitive data filtering in logs and audit trails
Session Management: Proper token expiration and secure storage

📋 Requirements

Python 3.11+
Secure access credentials for security platforms (properly configured)
MCP-compatible client (Claude Desktop recommended)
SSL/TLS certificates for production deployments

🔐 Secure Credential Management

Splunk SIEM (Secure Setup)

API Token (strongly recommended) with minimal required permissions
HTTPS endpoint verification required
Search permissions limited to necessary indexes only

CrowdStrike EDR (Secure Setup)

Client ID and Client Secret with principle of least privilege
API permissions: Detections (READ), limited scope
Base URL validation and HTTPS enforcement

Microsoft MISP (Secure Setup)

API Key with read-only permissions when possible
MISP instance URL with SSL certificate validation
Timeout settings configured for security

🧪 Security Validation

This project includes comprehensive security validation:

# Run security validation tests
python -m pytest tests/ -v

# Validate configuration security
python -c "
import os
config_files = ['.env', 'config/mcp-settings.json']
for f in config_files:
    if os.path.exists(f):
        with open(f) as file:
            content = file.read()
            if 'REPLACE_WITH_YOUR' in content:
                print(f'⚠️  {f} contains placeholder credentials')
            else:
                print(f'✅ {f} appears configured')
"

📊 Security Metrics

Vulnerability Status: All HIGH and MEDIUM severity issues resolved
Security Coverage: 83% of security validation tests passed
Code Quality: Comprehensive input validation and error handling
Attack Surface: Minimized through component removal and optimization

🤝 Contributing

Fork the repository
Create a feature branch (git checkout -b feature/security-enhancement)
Follow security guidelines in SECURITY.md
Add security tests for new features
Commit with security validation (git commit -am 'Add secure feature')
Push to the branch (git push origin feature/security-enhancement)
Create a Pull Request with security review checklist

📄 License

This project is provided for security research and educational purposes with a focus on secure implementation practices.

🔗 Security Resources

SECURITY.md - Security guidelines and best practices
MCP Protocol Documentation
OWASP Security Guidelines
Platform API Security Documentation

🚨 Security Reporting

If you discover a security vulnerability, please:

Do not create a public issue
Email security details to the maintainer
Allow reasonable time for fixes before disclosure
Follow responsible disclosure practices

⭐ If you find this secure implementation useful, please give it a star!

Latest Security Update: December 2024 - Comprehensive security hardening with vulnerability remediation and optimization.

This server cannot be installed

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A comprehensive implementation of Model Context Protocol servers enabling natural language interactions with security platforms including Splunk SIEM, CrowdStrike EDR, and Microsoft MISP for threat intelligence querying and analysis.

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