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DepenFusion: A Powerful Pentesting Tool for Detecting Dependency Confusion Vulnerabilities in Node.js

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What is DepenFusion?

DepenFusion is an advanced, multithreaded penetration testing (pentest) tool designed specifically to identify and analyze dependency confusion vulnerabilities in Node.js (npm) projects.

Key Features:

  • Automated Vulnerability Detection: DepenFusion is designed to automatically scan and identify dependency confusion vulnerabilities in Node.js projects.
  • User-Friendly Interface: With an easy-to-use command-line interface, the tool simplifies the process of scanning subdomains/domains for potential vulnerabilities.
  • Smart URL Handling: DepenFusion intelligently handles variations in URLs, ensuring smooth processing even with different formats.
  • Support for Multithreading: The tool's multithreading capability allows for faster and more efficient scanning of multiple targets simultaneously.
  • Silent Mode and Verbose Options: DepenFusion provides the flexibility of silent mode, which displays only useful results, or verbose mode for more detailed output.
  • Integration Possibilities: DepenFusion can be easily integrated with other security tools to enhance vulnerability assessment capabilities.

How to Use DepenFusion?

  1. Installation:

    • Ensure you have both Git and Python 3 installed on your system.

    • Download the DepenFusion tool using the command:

      git clone github.com/benjamin-mauss/depenfusion

    • Change to the DepenFusion directory:

      cd depenfusion

    • Install the necessary dependencies:

      pip3 install -r requirements.txt

  2. Scanning Subdomains/Domains:

    Use the following command to analyze subdomains/domains by providing them in the standard input (stdin):

    cat subdomains.txt | python3 ./main.py

  3. Advanced Usage:

    DepenFusion offers several optional command-line arguments for advanced users. To view these options, run:

    python3 ./main.py --help

    These options include adjusting the number of concurrent threads, setting a timeout period, appending a custom string to URLs, enabling verbose mode, and more.

How DepenFusion Works:

DepenFusion employs a systematic approach to identify dependency confusion vulnerabilities:

  1. Async Request and File Analysis: The tool sends asynchronous requests to the target URLs, appending package.json and package-lock.json to each URL. It then checks if these files exist and are valid.
  2. Dependency Extraction: If valid package files are found, DepenFusion extracts the dependencies listed within them.
  3. Validation through NPM API: DepenFusion proceeds to verify the existence of the extracted dependencies by querying the npm API.

Future Enhancements:

In the future, DepenFusion is expected to expand its capabilities by incorporating the following improvements:

  • Support for Additional Package Managers: DepenFusion aims to include support for other popular package managers such as pip for Python and gem for Ruby.
  • GoLang Implementation: Development is underway to create a GoLang version of DepenFusion, enabling even faster and more efficient scanning.

DepenFusion is a valuable tool for identifying and mitigating dependency confusion vulnerabilities in Node.js projects, enhancing the security posture of developers and organizations worldwide.