CVE-2024-37014
Remote code execution via untrusted access to custom_component endpoint.
- CVSS 9.8
- CWE-94
- Input Validation and Sanitization
- Remote
Langflow through 0.6.19 allows remote code execution if untrusted users are able to reach the "POST /api/v1/custom_component" endpoint and provide a Python script.
- CWE
- CWE-94
- CVSS base score
- 9.8
- Published
- 2024-06-10
- OWASP
- A01 Broken Access Control
- Orthogonal defect classification
- Function
- Code defect classification
- Incorrect Functionality
- Category
- Input Validation and Sanitization
- Subcategory
- Command Injection
- Accessibility scope
- Remote
- Impact
- Arbitrary Code Execution
- Affected component
- Langflow
- Fixed by upgrading
- Yes
Solution
Upgrade Langflow to version 0.6.20 or later and implement strict input validation to prevent untrusted code execution.
Vulnerable code sample
from flask import Flask, request, jsonify
app = Flask(__name__)
@app.route('/api/v1/custom_component', methods=['POST'])
def custom_component():
data = request.json
if 'script' not in data:
return jsonify({'error': 'No script provided'}), 400
exec(data['script'])
return jsonify({'message': 'Script executed successfully'}), 200
if __name__ == '__main__':
app.run()Patched code sample
from flask import Flask, request, jsonify
app = Flask(__name__)
@app.route('/api/v1/custom_component', methods=['POST'])
def custom_component():
data = request.json
if 'action' not in data:
return jsonify({'error': 'No action provided'}), 400
action = data['action']
allowed_actions = ['greet', 'sum_numbers']
if action not in allowed_actions:
return jsonify({'error': 'Invalid action'}), 400
if action == 'greet':
name = data.get('name', 'Guest')
return jsonify({'message': f'Hello, {name}!'}), 200
elif action == 'sum_numbers':
numbers = data.get('numbers', [])
if not all(isinstance(num, (int, float)) for num in numbers):
return jsonify({'error': 'Invalid numbers provided'}), 400
return jsonify({'result': sum(numbers)}), 200
return jsonify({'error': 'Unknown action'}), 400
if __name__ == '__main__':
app.run()Payload
__import__('os').system('whoami')Cite this entry
@misc{vaitp:cve202437014,
title = {{Remote code execution via untrusted access to custom_component endpoint.}},
author = {Bogaerts, Fr\'ed\'eric and Ivaki, Naghmeh and Fonseca, Jos\'e},
year = {2024},
note = {VAITP Python Vulnerability Dataset, entry CVE-2024-37014},
howpublished = {\url{https://netpack.pt/vaitp/vulnerability/CVE-2024-37014/}}
}Introducing the "VAITP dataset": a specialized repository of Python vulnerabilities and patches, meticulously compiled for the use of the security research community. As Python's prominence grows, understanding and addressing potential security vulnerabilities become crucial. Crafted by and for the cybersecurity community, this dataset offers a valuable resource for researchers, analysts, and developers to analyze and mitigate the security risks associated with Python. Through the comprehensive exploration of vulnerabilities and corresponding patches, the VAITP dataset fosters a safer and more resilient Python ecosystem, encouraging collaborative advancements in programming security.
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