Corsy
CORS Misconfiguration Scanner
Introduction
Corsy is a lightweight program that scans for all known misconfigurations in CORS implementations.
Requirements
Corsy only works with Python 3 and has just one dependency:
requests
To install this dependency, navigate to Corsy directory and execute pip3 install requests
Usage
Using Corsy is pretty simple
python3 corsy.py -u https://example.com
Scan URLs from a file
python3 corsy.py -i /path/urls.txt
Scan URLs from stdin
cat urls.txt | python3 corsy.py
Number of threads
python3 corsy.py -u https://example.com -t 20
Delay between requests
python3 corsy.py -u https://example.com -d 2
Export results to JSON
python3 corsy.py -i /path/urls.txt -o /path/output.json
Custom HTTP headers
python3 corsy.py -u https://example.com --headers "User-Agent: GoogleBot\nCookie: SESSION=Hacked"
Skip printing tips
-q can be used to skip printing of description, severity, exploitation fields in the output.
Tests implemented
- Pre-domain bypass
- Post-domain bypass
- Backtick bypass
- Null origin bypass
- Unescaped dot bypass
- Underscore bypass
- Invalid value
- Wild card value
- Origin reflection test
- Third party allowance test
- HTTP allowance test