id: CVE-2021-24838

info:
  name: AnyComment < 0.3.5 - Open Redirect
  author: noobexploiter
  severity: medium
  description: |
    The plugin has an API endpoint which passes user input via the redirect parameter to the wp_redirect() function without being validated first, leading to an Open Redirect issue, which according to the vendor, is a feature.
  reference: |
    - https://wpscan.com/vulnerability/562e81ad-7422-4437-a5b4-fcab9379db82
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24838
  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-2021-24838
    cwe-id: CWE-601
  metadata:
    verified: true
  tags: cve,cve2021,wordpress,wp-plugin,redirect,anycomment

requests:
  - method: GET
    path:
      - "{{BaseURL}}/wp-json/anycomment/v1/auth/wordpress?redirect=https://interact.sh"
      - "{{BaseURL}}/wp-json/anycomment/v1/auth/wordpress?redirect=https://interact.sh?a=https://interact.sh"

    stop-at-first-match: true
    matchers-condition: and
    matchers:
      - type: regex
        part: header
        regex:
          - '(?m)^(?:Location\s*?:\s*?)(?:https?:\/\/|\/\/|\/\\\\|\/\\)?(?:[a-zA-Z0-9\-_\.@]*)interact\.sh\/?(\/|[^.].*)?$' # https://regex101.com/r/ZDYhFh/1

      - type: status
        status:
          - 302