debsecan-mcp 0.1.3

Debian Security Analyzer MCP Server

debsecan-mcp

A Model Context Protocol (MCP) server for Debian security vulnerability analysis. This server integrates with AI assistants (like Claude) to provide vulnerability scanning capabilities for Debian systems.

Features

• List Vulnerabilities: Scan all installed packages on your Debian system for known vulnerabilities
• CVE Research: Get detailed information about specific CVEs including EPSS scores
• Automatic Suite Detection: Automatically detects your Debian suite (bookworm, trixie, sid, etc.)
• EPSS Integration: Enriches vulnerability data with Exploit Prediction Scoring System (EPSS) scores

Installation

pip install -e .

Usage

Running the MCP Server

debsecan-mcp

Or with a specific Debian suite:

DEBSECAN_SUITE=bookworm debsecan-mcp

Command Line Options

debsecan-mcp --help

Options:

• --transport {stdio,sse,streamable-http} - Transport mode (default: stdio)
• --mount-path PATH - Mount path for HTTP transports (default: /mcp)
• --host HOST - Host to bind to for HTTP transport (default: 0.0.0.0)
• --port PORT - Port to bind to for HTTP transport (default: 8000)

Transport Modes

STDIO Mode (Default)

Used for direct integration with AI assistants like Claude Desktop or VSCode.

debsecan-mcp --transport stdio

HTTP Modes

For HTTP-based access, use sse or streamable-http:

# SSE mode
debsecan-mcp --transport sse --port 8080 --mount-path /mcp

# Streamable HTTP mode
debsecan-mcp --transport streamable-http --port 8080 --mount-path /mcp

Note: HTTP modes require running behind a web server. See HTTP Server Setup below.

HTTP Server Setup

The HTTP transport modes need to be served by a WSGI/ASGI server. Example with uvicorn:

# Install uvicorn
pip install uvicorn

# Run with stdio transport and wrap with uvicorn
uvicorn debsecan_mcp.main:mcp_app --app-dir src --host 0.0.0.0 --port 8000 --path /mcp

Or use the built-in development server:

# SSE mode
debsecan-mcp --transport sse --host 0.0.0.0 --port 8000 --mount-path /mcp

Available Tools

list_vulnerabilities

Lists all vulnerabilities affecting the currently installed packages on the system. Categorises them by severity (critical, high, medium, low, negligible) and EPSS score.

research_cves

Provides detailed information for a list of CVE IDs, including:

• Package name
• Urgency level
• EPSS score and percentile
• Whether a fix is available
• Remote exploitability
• Description

Adding to VSCode

To use this MCP server with VSCode and AI assistants:

1. Open VSCode Settings (JSON):

   • On macOS: Cmd + Shift + P → "Preferences: Open Settings (JSON)"
   • On Linux/Windows: Ctrl + Shift + P → "Preferences: Open Settings (JSON)"

2. Add the MCP server configuration:

{
  "mcpServers": {
    "debsecan": {
      "command": "debsecan-mcp",
      "args": [],
      "env": {
        "DEBSECAN_SUITE": "bookworm"
      }
    }
  }
}

3. Replace bookworm with your Debian suite codename (e.g., trixie, sid, GENERIC)

4. Restart VSCode or reload the window

Adding to opencode

Option 1: STDIO Mode (Default)

For local usage with opencode, use the default stdio transport:

{
  "mcpServers": {
    "debsecan": {
      "command": "debsecan-mcp",
      "args": ["--transport", "stdio"],
      "env": {
        "DEBSECAN_SUITE": "bookworm"
      }
    }
  }
}

Option 2: HTTP Mode

For remote or containerized setups, you can run the MCP server over HTTP:

1. Start the server:

debsecan-mcp --transport streamable-http --port 8080 --mount-path /mcp

2. Configure opencode to connect via HTTP:

{
  "mcpServers": {
    "debsecan": {
      "url": "http://localhost:8080/mcp"
    }
  }
}

Note: HTTP mode requires the MCP client to support HTTP transport.

How It Works

1. Package Discovery: Uses python-apt to enumerate all installed packages on the system
2. Vulnerability Data: Fetches compressed vulnerability data from the Debian Security Tracker
3. EPSS Enrichment: Downloads EPSS scores from CISA to prioritize vulnerabilities
4. Analysis: Compares installed package versions against vulnerability data using APT version comparison

Requirements

• Python 3.11+
• Debian-based distribution (Debian, Ubuntu, etc.)
• Network access to download vulnerability data