Add Javascript Files from javascript-CWE-78-os-command-injection - Batch 38

[amazon-pratik]

📝 Description

This PR adds a batch of Javascript files from the javascript-CWE-78-os-command-injection directory to the repository.

📁 Files Added

• Source Folder: javascript-CWE-78-os-command-injection
• Batch: javascript-cwe-78-os-command-injection-javascript-batch-38
• Language: Javascript
• Contains javascript files collected from the source directory

🔍 Changes

• Added javascript files from javascript-CWE-78-os-command-injection maintaining original directory structure
• Files organized in batch 38 for easier review
• Ready for integration and testing

💾 Source

Original files sourced from: javascript-CWE-78-os-command-injection

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[amazon-q-developer]

⏳ Code review in progress. Analyzing for code quality issues and best practices. You can monitor the review status in the checks section at the bottom of this pull request. Detailed findings will be posted upon completion.

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feature/javascript-cwe-78-os-command-injection-javascript-batch-38

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[amazon-q-developer]

Security Review Summary

This PR adds a JavaScript file that demonstrates OS command injection vulnerabilities (CWE-78). The code contains critical security flaws that must be addressed before merging:

Critical Issues Found:

1. OS Command Injection Vulnerability: Direct user input interpolation in shell commands allows arbitrary command execution
2. Missing Input Validation: No sanitization or validation of user-provided data
3. Unsafe API Usage: Using exec() instead of safer alternatives like execFile()

Recommendations:

• Replace exec() with execFile() to prevent shell injection
• Add comprehensive input validation and sanitization
• Consider if this vulnerable code is intentionally added for testing purposes - if so, ensure it's properly isolated and documented

The current implementation poses significant security risks and should not be deployed in any production environment.

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[amazon-q-developer]

🛑 Security Vulnerability: This code contains a critical OS command injection vulnerability. User input is directly interpolated into a shell command without sanitization, allowing attackers to execute arbitrary system commands¹.

Suggested change

	exec(`./rop_basic '${userInput}'`, (error, stdout, stderr) => {
	execFile('./rop_basic', [userInput], (error, stdout, stderr) => {

Footnotes

1. CWE-78: OS Command Injection - https://cwe.mitre.org/data/definitions/78.html ↩

[amazon-q-developer]

Import execFile instead of exec to use the safer alternative for command execution that prevents shell injection attacks.

Suggested change

	const { exec } = require('child_process');
	const { execFile } = require('child_process');

[amazon-q-developer]

Add input validation to prevent malicious payloads. User input should be validated and sanitized before processing.

Suggested change

	const userInput = req.body.input;
	const userInput = req.body.input;
	// Validate input
	if (!userInput || typeof userInput !== 'string' || userInput.length > 100) {
	return res.status(400).json({ message: 'Invalid input' });
	}