Kibana Timelion - Arbitrary Code Execution

Exploited in the wild. Listed by CISA on 2022-01-10; known to be used by ransomware.

criticalseverity

10CVSS score

95.3%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

Kibana versions before 5.6.15 and 6.6.1 contain an arbitrary code execution flaw in the Timelion visualizer. An attacker with access to the Timelion application could send a request that will attempt to execute javascript code. This could possibly lead to an attacker executing arbitrary commands with permissions of the Kibana process on the host system.

Impact

Arbitrary code execution can result in unauthorized access, data leakage, and system compromise.

Fix

Apply the latest security patches or upgrade to a patched version of Kibana to mitigate the vulnerability.

How to confirm it

Send: POST {{BaseURL}}/api/timelion/run
Positive when: contains "seriesList" AND contains in header "application/json" AND status 200

Run it with nuclei: nuclei -id CVE-2019-7609 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2019-7609

info:
  name: Kibana Timelion - Arbitrary Code Execution
  author: dwisiswant0
  severity: critical
  description: Kibana versions before 5.6.15 and 6.6.1 contain an arbitrary code execution flaw in the Timelion visualizer. An attacker with access to the Timelion application could send a request that will attempt to execute javascript code. This could possibly lead to an attacker executing arbitrary commands with permissions of the Kibana process on the host system.
  impact: |
    Arbitrary code execution can result in unauthorized access, data leakage, and system compromise.
  remediation: |
    Apply the latest security patches or upgrade to a patched version of Kibana to mitigate the vulnerability.
  reference:
    - https://github.com/mpgn/CVE-2019-7609
    - https://discuss.elastic.co/t/elastic-stack-6-6-1-and-5-6-15-security-update/169077
    - https://nvd.nist.gov/vuln/detail/CVE-2019-7609
    - https://www.elastic.co/community/security
    - https://access.redhat.com/errata/RHBA-2019:2824
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 10
    cve-id: CVE-2019-7609
    cwe-id: CWE-94
    epss-score: 0.95338
    epss-percentile: 0.99866
    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,cve2019,kibana,rce,kev,elastic,vkev,vuln

http:
  - method: POST
    path:
      - "{{BaseURL}}/api/timelion/run"

    body: '{"sheet":[".es(*)"],"time":{"from":"now-1m","to":"now","mode":"quick","interval":"auto","timezone":"Asia/Shanghai"}}'

    headers:
      Content-Type: "application/json; charset=utf-8"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "seriesList"

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

      - type: status
        status:
          - 200

References

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