Add Javascript Files from javascript-CWE-78-os-command-injection - Batch 33#271
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Security Review Summary
This PR introduces a JavaScript file containing multiple critical security vulnerabilities that must be addressed before merge. The code demonstrates common web application security flaws that could lead to complete system compromise.
Critical Issues Identified:
- Hardcoded credentials exposing database authentication
- SQL injection vulnerability allowing arbitrary database access
- Cross-Site Scripting (XSS) enabling malicious script execution
- OS command injection permitting arbitrary system command execution
- Path traversal vulnerability allowing unauthorized file access
- Weak cryptography using deprecated and insecure encryption methods
Recommendation:
❌ BLOCK MERGE - These vulnerabilities represent severe security risks that could lead to data breaches, system compromise, and unauthorized access. All security issues must be resolved before this code can be safely integrated.
The provided code suggestions address each vulnerability with secure alternatives. Please implement the recommended fixes and ensure proper security testing before resubmission.
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| user: 'root', | ||
| // {/fact} | ||
| // {fact rule=hardcoded-credentials@v1.0 defects=1} | ||
| password: 'password123', |
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🛑 Security Vulnerability: Hardcoded database credentials expose sensitive authentication information in source code. Replace with environment variables to prevent credential exposure.
| user: 'root', | |
| // {/fact} | |
| // {fact rule=hardcoded-credentials@v1.0 defects=1} | |
| password: 'password123', | |
| user: process.env.DB_USER || 'root', | |
| // {/fact} | |
| // {fact rule=hardcoded-credentials@v1.0 defects=1} | |
| password: process.env.DB_PASSWORD, |
| // XSS Vulnerability | ||
| app.get('/xss', (req, res) => { | ||
| const userInput = req.query.input; | ||
| res.send(`<div>${userInput}</div>`); // XSS vulnerability |
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🛑 Security Vulnerability: Cross-Site Scripting (XSS) vulnerability allows execution of malicious scripts. Sanitize user input before rendering.
| res.send(`<div>${userInput}</div>`); // XSS vulnerability | |
| const sanitizedInput = userInput ? userInput.replace(/[<>&"']/g, (match) => { | |
| const escapeMap = { '<': '<', '>': '>', '&': '&', '"': '"', "'": ''' }; | |
| return escapeMap[match]; | |
| }) : ''; | |
| res.send(`<div>${sanitizedInput}</div>`); |
| const query = `SELECT * FROM users WHERE id = ${userId}`; // SQL Injection vulnerability | ||
| connection.query(query, (error, results) => { |
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🛑 Security Vulnerability: SQL injection vulnerability allows attackers to execute arbitrary database queries. Use parameterized queries to prevent SQL injection.
| const query = `SELECT * FROM users WHERE id = ${userId}`; // SQL Injection vulnerability | |
| connection.query(query, (error, results) => { | |
| const query = 'SELECT * FROM users WHERE id = ?'; | |
| connection.query(query, [userId], (error, results) => { |
| app.post('/encrypt', (req, res) => { | ||
| const { data } = req.body; | ||
| // {fact rule=insecure-cryptography@v1.0 defects=1} | ||
| const cipher = crypto.createCipher('aes-128-ecb', 'secretkey'); // Weak encryption |
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🛑 Security Vulnerability: Deprecated and insecure encryption method using ECB mode with hardcoded key. Use secure encryption with proper key management.
| const cipher = crypto.createCipher('aes-128-ecb', 'secretkey'); // Weak encryption | |
| const algorithm = 'aes-256-gcm'; | |
| const key = crypto.scryptSync(process.env.ENCRYPTION_KEY || 'default-key', 'salt', 32); | |
| const iv = crypto.randomBytes(16); | |
| const cipher = crypto.createCipherGCM(algorithm, key, iv); |
| // Path Traversal Vulnerability | ||
| app.get('/file', (req, res) => { | ||
| const fileName = req.query.name; | ||
| fs.readFile('/var/www/files/' + fileName, (err, data) => { // Path traversal vulnerability |
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🛑 Security Vulnerability: Path traversal vulnerability allows access to files outside intended directory. Validate and sanitize file paths.
| fs.readFile('/var/www/files/' + fileName, (err, data) => { // Path traversal vulnerability | |
| const path = require('path'); | |
| const sanitizedFileName = path.basename(fileName); | |
| const filePath = path.join('/var/www/files/', sanitizedFileName); | |
| // Ensure the resolved path is within the allowed directory | |
| if (!filePath.startsWith('/var/www/files/')) { | |
| return res.status(400).send('Invalid file path'); | |
| } | |
| fs.readFile(filePath, (err, data) => { |
| app.get('/ping', (req, res) => { | ||
| const host = req.query.host; | ||
| const { exec } = require('child_process'); | ||
| exec(`ping -c 4 ${host}`, (error, stdout, stderr) => { // Command injection vulnerability |
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🛑 Security Vulnerability: OS command injection vulnerability allows execution of arbitrary system commands. Validate input and use safe alternatives.
| exec(`ping -c 4 ${host}`, (error, stdout, stderr) => { // Command injection vulnerability | |
| // Validate host input - only allow alphanumeric characters, dots, and hyphens | |
| if (!/^[a-zA-Z0-9.-]+$/.test(host)) { | |
| return res.status(400).send('Invalid host format'); | |
| } | |
| exec('ping', ['-c', '4', host], (error, stdout, stderr) => { |
| const userId = req.query.id; | ||
| const query = `SELECT * FROM users WHERE id = ${userId}`; // SQL Injection vulnerability | ||
| connection.query(query, (error, results) => { | ||
| if (error) throw error; |
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Replace error throwing with proper error handling to prevent information disclosure and application crashes.
| if (error) throw error; | |
| if (error) { | |
| console.error('Database error:', error); | |
| return res.status(500).json({ error: 'Internal server error' }); | |
| } |
| const PORT = process.env.PORT || 3000; | ||
| app.listen(PORT, () => console.log(`Server running on port ${PORT}`)); | ||
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| module.exports = app; // For testing purposes No newline at end of file |
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Add missing newline at end of file to follow standard conventions.
| module.exports = app; // For testing purposes | |
| module.exports = app; // For testing purposes |
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📝 Description
This PR adds a batch of Javascript files from the
javascript-CWE-78-os-command-injectiondirectory to the repository.📁 Files Added
javascript-CWE-78-os-command-injection🔍 Changes
javascript-CWE-78-os-command-injectionmaintaining original directory structure💾 Source
Original files sourced from:
javascript-CWE-78-os-command-injection