id: CVE-2020-13927

info:

name: Airflow Experimental <1.10.11 - REST API Auth Bypass

author: pdteam

severity: critical

description: |

Airflow's Experimental API prior 1.10.11 allows all API requests without authentication.

remediation: |

From Airflow 1.10.11 forward, the default has been changed to deny all requests by default. Note - this change fixes it for new installs but existing users need to change their config to default `[api]auth_backend = airflow.api.auth.backend.deny_all` as mentioned in the Updating Guide linked in the references.

reference:

- https://lists.apache.org/thread.html/r23a81b247aa346ff193670be565b2b8ea4b17ddbc7a35fc099c1aadd@

- http://packetstormsecurity.com/files/162908/Apache-Airflow-1.10.10-Remote-Code-Execution.html

- https://airflow.apache.org/docs/1.10.11/security.html#api-authenticatio

- https://nvd.nist.gov/vuln/detail/CVE-2020-13927

- http://packetstormsecurity.com/files/174764/Apache-Airflow-1.10.10-Remote-Code-Execution.html

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-2020-13927

cwe-id: CWE-1188

epss-score: 0.96763

epss-percentile: 0.99548

cpe: cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*

metadata:

verified: true

max-request: 1

vendor: apache

product: airflow

shodan-query: title:"Airflow - DAGs" || http.html:"Apache Airflow"

tags: packetstorm,cve,cve2020,apache,airflow,unauth,auth-bypass,kev

http:

- method: GET

path:

- '{{BaseURL}}/api/experimental/latest_runs'

matchers:

- type: word

part: body

words:

- '"dag_run_url":'

- '"dag_id":'

- '"items":'

condition: and

# digest: 4a0a00473045022100df97dd685d0421c06b132a5fd8a7544782f4109f5e69587313e7a77a9bef92b9022075a3b3ef28de9309e8a743b8af7dc8a97cd3d5c1e70990a06ff3863867fb1bcb:922c64590222798bb761d5b6d8e72950