Add Javascript Files from javascript-CWE-78-os-command-injection - Batch 42#280
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Security Review Summary
This PR adds a JavaScript file containing critical security vulnerabilities that must be addressed before merging. The code demonstrates OS command injection patterns (CWE-78) which pose severe security risks.
Critical Issues Found:
- OS Command Injection (CWE-78) - User input passed directly to system commands without proper sanitization
- CORS Misconfiguration (CWE-346) - Allows all origins by default, enabling cross-origin attacks
- Hardcoded Credentials - Default MongoDB URI placeholder creates security risks
Required Actions:
- Implement proper input sanitization to prevent command injection
- Configure CORS to restrict origins to trusted domains only
- Remove hardcoded credential placeholders and require environment variables
- Add proper error handling for missing configuration
Recommendation: Do not merge until all security vulnerabilities are resolved. Consider implementing additional security measures like input validation libraries and security headers.
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| ageInt.toString(), | ||
| "Vega", | ||
| "False", | ||
| description, |
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🛑 OS Command Injection Vulnerability: The description parameter from URL is passed directly to the Python script without proper sanitization. Despite the basic validation on line 42, the current check only validates type and length but doesn't prevent command injection through shell metacharacters. An attacker could craft malicious input like ; rm -rf / or $(malicious_command) to execute arbitrary commands on the server1.
| description, | |
| description.replace(/[;&|`$(){}[\]\\<>]/g, ''), |
Footnotes
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CWE-78: OS Command Injection - https://cwe.mitre.org/data/definitions/78.html ↩
| if (!description || typeof description !== "string" || description.length > 100) { | ||
| return res.status(400).json({ error: "Invalid description input." }); | ||
| } |
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Input validation is insufficient for preventing command injection. The current validation only checks type and length but allows dangerous shell metacharacters that could be exploited for OS command injection attacks.
| if (!description || typeof description !== "string" || description.length > 100) { | |
| return res.status(400).json({ error: "Invalid description input." }); | |
| } | |
| // Enhanced input sanitization to prevent command injection | |
| if (!description || typeof description !== "string" || description.length > 100 || /[;&|`$(){}[\]\\<>]/.test(description)) { | |
| return res.status(400).json({ error: "Invalid description input or contains unsafe characters." }); | |
| } |
| // Middlewares | ||
| app.use(express.json()); | ||
| app.use(cors({ | ||
| origin: process.env.CORS_ORIGIN || '*' // Allow all origins or restrict based on environment variable |
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🛑 Security Misconfiguration: CORS is configured to allow all origins ('*') by default, which exposes the API to cross-origin attacks from any domain. This creates a significant security risk for sensitive operations like command execution1.
| origin: process.env.CORS_ORIGIN || '*' // Allow all origins or restrict based on environment variable | |
| origin: process.env.CORS_ORIGIN || '' // Restrict to specific trusted origins |
Footnotes
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CWE-346: Origin Validation Error - https://cwe.mitre.org/data/definitions/346.html ↩
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| // MONGOOSE SETUP | ||
| const PORT = process.env.PORT || 3001; | ||
| const MONGO_URI = process.env.MONGO_URI || "your-default-mongodb-uri-here"; |
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🛑 Hardcoded Credentials: The default MongoDB URI placeholder contains sensitive connection information that could be accidentally committed to version control. This creates a security risk if the actual URI is left in the code.
| const MONGO_URI = process.env.MONGO_URI || "your-default-mongodb-uri-here"; | |
| const MONGO_URI = process.env.MONGO_URI; |
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| // Run the Python script with arguments | ||
| // {fact rule=os-command-injection@v1.0 defects=1} | ||
| const pythonProcess = spawn("python3", [ |
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The Python executable path is hardcoded which could fail in different environments. Consider using a configurable path or checking for the executable's existence before spawning the process.
| const pythonProcess = spawn("python3", [ | |
| const pythonProcess = spawn(process.env.PYTHON_PATH || "python3", [ |
| const PORT = process.env.PORT || 3001; | ||
| const MONGO_URI = process.env.MONGO_URI || "your-default-mongodb-uri-here"; | ||
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| mongoose |
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Missing error handling for undefined MONGO_URI environment variable. The application will fail to start if the environment variable is not set, but the error won't be clear to developers.
| mongoose | |
| if (!MONGO_URI) { | |
| console.error("MONGO_URI environment variable is required"); | |
| process.exit(1); | |
| } | |
| mongoose |
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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