Postmortem: Supply Chain Attack via Compromised NPM Package 11 Caused a Production Data Leak

The provided code and table outline an approach to securing Node.js applications by enforcing strict dependency management practices. Below is a detailed explanation of the components:

Custom In-House Scanner

This custom script scans package-lock.json files for potential security vulnerabilities, focusing on detecting compromised major versions or malicious scripts in dependencies.

Key Features:

• Dependency Version Pinning: Ensures that only exact version numbers are used for certain critical packages to prevent accidental upgrades to potentially compromised major versions.
• Network Request Blocking: Prevents http(s) requests from being made by any dependency, which can help mitigate the risk of malicious scripts downloading additional payloads or communicating with unauthorized servers.
• Audit Logging: Logs all findings and actions taken during the scan process.

Example Code:

javascript
 
1const fs = require('fs');
2const path = require('path');
3const { execSync } = require('child_process');
4const { promisify } = require('util');
5
6// Promisified file system functions for async/await usage
7const writeFile = promisify(fs.writeFile);
8const readFile = promisify(fs.readFile);
9const access = promisify(fs.access);
10
11// Configuration: packages to enforce strict pinning for (no ^ or ~)
12const STRICT_PIN_PACK
13
14[Read the full article at DEV Community](https://dev.to/johalputt/postmortem-supply-chain-attack-via-compromised-npm-package-11-caused-a-production-data-leak-314j)
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