Command Injection Vulnerability in MCP File Reader

What is the Vulnerable File Reader Server?

The Vulnerable File Reader Server is a Python implementation that demonstrates a critical command injection vulnerability in a Model Context Protocol (MCP) server. It showcases how improper input sanitization in file paths can lead to severe security flaws, allowing attackers to execute arbitrary commands on the host system.

How to use the Vulnerable File Reader Server?

To use the server, clone the repository, install the necessary dependencies, configure the MCP server, and run it in development mode. You can then connect to the server using the MCP Inspector to test the vulnerability.

Key features of the Vulnerable File Reader Server?

• Demonstrates command injection vulnerabilities in a controlled environment.
• Provides examples of exploitation techniques.
• Includes proper security practices to mitigate such vulnerabilities.

Use cases of the Vulnerable File Reader Server?

1. Educational purposes for security training and awareness.
2. Testing and demonstrating command injection vulnerabilities.
3. Learning how to implement secure coding practices.

FAQ from the Vulnerable File Reader Server?

• Is this server safe to use in production?

No! This implementation contains deliberate vulnerabilities and should only be used for educational purposes.

• What programming language is used?

The server is implemented in Python.

• How can I fix the vulnerabilities demonstrated?

Avoid using shell=True with user input and implement proper input validation.