id: CVE-2021-25033

info:
  name: Noptin < 1.6.5 - Open Redirect
  author: dhiyaneshDk
  severity: medium
  description: Noptin < 1.6.5 is susceptible to an open redirect vulnerability. The plugin does not validate the "to" parameter before redirecting the user to its given value, leading to an open redirect issue.
  remediation: |
    Update to Noptin plugin version 1.6.5 or later.
  reference:
    - https://wpscan.com/vulnerability/c2d2384c-41b9-4aaf-b918-c1cfda58af5c
    - https://plugins.trac.wordpress.org/changeset/2639592
    - https://nvd.nist.gov/vuln/detail/CVE-2021-25033
  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-2021-25033
    cwe-id: CWE-601
    epss-score: 0.001
    epss-percentile: 0.41037
    cpe: cpe:2.3:a:noptin:noptin:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 1
    vendor: noptin
    product: noptin
    framework: wordpress
  tags: wp,wpscan,cve,cve2021,wordpress,redirect,wp-plugin,noptin

http:
  - method: GET
    path:
      - "{{BaseURL}}/?noptin_ns=email_click&to=https://interact.sh"

    matchers:
      - type: regex
        part: header
        regex:
          - '(?m)^(?:Location\s*?:\s*?)(?:https?:\/\/|\/\/|\/\\\\|\/\\)(?:[a-zA-Z0-9\-_\.@]*)interact\.sh\/?(\/|[^.].*)?$' # https://regex101.com/r/L403F0/1

# digest: 4b0a00483046022100bb35162e1d039eeff5bb2f3ab0b0611971fee98173dd83716b1f01b313ceb309022100972dc56b2a66c5969157d9ce2581fb869a863b1b937837a4e1f93516666d3fe5:922c64590222798bb761d5b6d8e72950