NodeJsScan — Scanner For Node.js Applications

Maciej
2 min readSep 28, 2019

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Static security code scanner for Node.js applications.

Configuration and Running NodeJsScan

Install PostgreSQL DB and configure itSQLALCHEMY_DATABASE_URI in core/settings.py

pip3 install -r requirements.txt python3 migrate.py # Run once to create database entries required python3 app.py # Testing Environment gunicorn -b 0.0.0.0:9090 app:app # Production Environment

This will run NodeJsScan on http://0.0.0.0:9090
If you need to debug, set DEBUG = True in core/settings.py

NodeJsScan CLI

The command line interface (CLI) allows you to integrate NodeJsScan with DevSecOps CI/CD pipelines. The results are in JSON format. When you use CLI the results are never stored with NodeJsScan backend.

virtualenv venv -p python3
source venv/bin/activate
(venv)pip install nodejsscan
(venv)$ nodejsscan
usage: nodejsscan [-h] [-f FILE [FILE ...]] [-d DIRECTORY [DIRECTORY ...]]
[-o OUTPUT] [-v]
optional arguments:
-h, --help show this help message and exit
-f FILE [FILE ...], --file FILE [FILE ...]
Node.js file(s) to scan
-d DIRECTORY [DIRECTORY ...], --directory DIRECTORY [DIRECTORY ...]
Node.js source code directory/directories to scan
-o OUTPUT, --output OUTPUT
Output file to save JSON report
-v, --version Show nodejsscan version

Python API

import core.scanner as njsscan
res_dir = njsscan.scan_dirs(['/Code/Node.Js-Security-Course'])
res_file = njsscan.scan_file(['/Code/Node.Js-Security-Course/deserialization.js'])
print(res_file)
[{'title': 'Deserialization Remote Code Injection', 'description': "User controlled data in 'unserialize()' or 'deserialize()' function can result in Object Injection or Remote Code Injection.", 'tag': 'rci', 'line': 11, 'lines': 'app.use(cookieParser())\n\napp.get(\'/\', function(req, res) {\n if (req.cookies.profile) {\n var str = new Buffer(req.cookies.profile, \'base64\').toString();\n var obj = serialize.unserialize(str);\n if (obj.username) {\n res.send("Hello " + escape(obj.username));\n }\n } else {', 'filename': 'deserialization.js', 'path': '/Users/ajin/Code/Node.Js-Security-Course/deserialization.js', 'sha2': '06f3f0ff3deed27aeb95955a17abc7722895d3538c14648af97789d8777cee50'}]

Docker

docker build -t nodejsscan .
docker run -it -p 9090:9090 nodejsscan

DockerHub

docker pull opensecurity/nodejsscan
docker run -it -p 9090:9090 opensecurity/nodejsscan:latest

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Maciej
Maciej

Written by Maciej

DevOps Consultant. I’m strongly focused on automation, security, and reliability.

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