CVE-2020-13927: Apache Airflow's Experimental API Authentication Bypass
First published: Tue Nov 10 2020(Updated: )
"The previous default setting for Airflow's Experimental API was to allow all API requests without authentication, but this poses security risks to users who miss this fact. From Airflow 1.10.11 the default has been changed to deny all requests by default and is documented at https://airflow.apache.org/docs/1.10.11/security.html#api-authentication. 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: https://github.com/apache/airflow/blob/1.10.11/UPDATING.md#experimental-api-will-deny-all-request-by-default"
Credit: security@apache.org security@apache.org security@apache.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| pip/apache-airflow | <1.10.11 | 1.10.11 |
| Apache Airflow | <1.10.11 | |
| Apache Airflow's Experimental API | ||
| <1.10.11 |
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Reference Links
- http://packetstormsecurity.com/files/162908/Apache-Airflow-1.10.10-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/174764/Apache-Airflow-1.10.10-Remote-Code-Execution.html
- https://lists.apache.org/thread.html/r23a81b247aa346ff193670be565b2b8ea4b17ddbc7a35fc099c1aadd%40%3Cdev.airflow.apache.org%3E
- https://nvd.nist.gov/vuln/detail/CVE-2020-13927
- https://airflow.apache.org/docs/apache-airflow/1.10.11/security.html#api-authentication
- https://github.com/apache/airflow/releases/tag/1.10.11
- https://github.com/apache/airflow/commit/180bca4f993b7b778a8d2c65d3d357652218922b
- https://github.com/apache/airflow/commit/9e305d6b810a2a21e2591a80a80ec41acb3afed0
- https://github.com/apache/airflow/pull/9611
- https://github.com/advisories/GHSA-hhx9-p69v-cx2j (Advisory)
- https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2020-18.yaml
Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID is CVE-2020-13927.
What is the title of this vulnerability?
The title of this vulnerability is 'Apache Airflow's Experimental API Authentication Bypass'.
What is the severity of CVE-2020-13927?
The severity of CVE-2020-13927 is critical with a score of 9.8.
What is the affected software?
The affected software is Apache Airflow's Experimental API version up to 1.10.11.
How can I fix this vulnerability?
To fix this vulnerability, update to Apache Airflow version 1.10.11 or higher.
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