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Nuclei Templates

GraphQL Alias-based Batching

ID: graphql-alias-batching

Severity: info

Author: Dolev Farhi

Tags: graphql,misconfig

Description

Section titled “Description”

GraphQL supports aliasing of multiple sub-queries into a single queries. This allows users to request multiple objects or multiple instances of objects efficiently.However, an attacker can leverage this feature to evade many security measures, including rate limit.

YAML Source

Section titled “YAML Source”
id: graphql-alias-batching


info:
  name: GraphQL Alias-based Batching
  author: Dolev Farhi
  severity: info
  description: |
    GraphQL supports aliasing of multiple sub-queries into a single queries. This allows users to request multiple objects or multiple instances of objects efficiently.
    However, an attacker can leverage this feature to evade many security measures, including rate limit.
  remediation: |
    Limit queries aliasing in your GraphQL Engine to ensure mitigation of aliasing-based attacks.
  reference:
    - https://github.com/dolevf/Damn-Vulnerable-GraphQL-Application
    - https://cheatsheetseries.owasp.org/cheatsheets/GraphQL_Cheat_Sheet.html
    - https://graphql.security/
    - https://stackoverflow.com/questions/62421352/graphql-difference-between-using-alias-versus-multiple-query-objects-when-doin
  classification:
    cpe: cpe:2.3:a:graphql:playground:*:*:*:*:node.js:*:*:*
  metadata:
    max-request: 2
    product: playground
    vendor: graphql
  tags: graphql,misconfig


variables:
  str: "{{to_lower(rand_text_alpha(5))}}"


http:
  - raw:
      - |
        POST /graphql HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json


        {"query":"query {\n {{str}}1:__typename \n {{str}}2:__typename \n {{str}}3:__typename \n {{str}}4:__typename \n {{str}}5:__typename \n {{str}}6:__typename \n }"}
      - |
        POST /api/graphql HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json


        {"query":"query {\n {{str}}1:__typename \n {{str}}2:__typename \n {{str}}3:__typename \n {{str}}4:__typename \n {{str}}5:__typename \n {{str}}6:__typename \n }"}


    stop-at-first-match: true


    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"data":'
          - '"{{str}}1":'
          - '"{{str}}6":'
        condition: and


      - type: word
        part: header
        words:
          - "application/json"
# digest: 4a0a00473045022100e078bff6d9541fae36e43297b629675f275eb4f29562e2b112ae93a373fcae3802207c81e087fa61b9bf01a560875e093df203c24b9d86464ede1a0bd47097aa08a0:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/misconfiguration/graphql/graphql-alias-batching.yaml"

View on Github