GraphQL Cop is a small Python utility to run common security tests against GraphQL APIs.

Requirements

• Python3
• Requests Library

Detections

• Alias Overloading (DoS)
• Batch Queries (DoS)
• GET based Queries (CSRF)
• GraphQL Tracing / Debug Modes (Info Leak)
• Field Duplication (DoS)
• Field Suggestions (Info Leak)
• GraphiQL (Info Leak)
• Introspection (Info Leak)
• Directives Overloading (DoS)

Usage

CSRF (GET)': {‘severity’: ‘LOW’, ‘impact’: ‘Possible CSRF’, ‘description’: ‘HTTP GET method supported (maybe CSRF)’}, ‘Alias Overloading’: {‘severity’: ‘HIGH’, ‘impact’: ‘Denial of Service’, ‘description’: ‘Alias Overloading with 100+ aliases is allowed’}, ‘Field Duplication’: {‘severity’: ‘HIGH’, ‘impact’: ‘Denial of Service’, ‘description’: ‘Queries are allowed with 1000+ of the same repeated field’}, ‘Directive Overloading’: {‘severity’: ‘HIGH’, ‘impact’: ‘Denial of Service’, ‘description’: ‘Multiple duplicated directives allowed in a query’}}">

python3 main.py -t https://mywebsite.com/graphql  
  
                GraphQL Cop 1.0  
           Security    Auditor for GraphQL  
         Dolev Farhi <[email protected]>  
    
Starting...  
[HIGH] Introspection Query Enabled (Information Leakage)  
[LOW] GraphQL Playground UI (Information Leakage)  
[HIGH] Alias Overloading with 100+ aliases is allowed (Denial of Service)  
[HIGH] Queries are allowed with 1000+ of the same repeated field (Denial of Service)  
  
python3 main.py -t https://mywebsite.com/graphql -o json  
  
{'Field Suggestions': {'severity': 'LOW', 'impact': 'Information Leakage', 'description': 'Field Suggestions are Enabled'}, 'Introspection': {'severity': 'HIGH', 'impact': 'Information Leakage', 'description': 'Introspection Query Enabled'}, 'Possible CSRF (GET)': {'severity': 'LOW', 'impact': 'Possible CSRF', 'description': 'HTTP GET method supported (maybe CSRF)'}, 'Alias Overloading': {'severity': 'HIGH', 'impact': 'Denial of Service', 'description': 'Alias Overloading with 100+ aliases is allowed'}, 'Field Duplication': {'severity': '   HIGH', 'impact': 'Denial of Service', 'description': 'Queries are allowed with 1000+ of the same repeated field'}, 'Directive Overloading': {'severity': 'HIGH', 'impact': 'Denial of Service', 'description': 'Multiple duplicated directives allowed in a query'}}  

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