Auth bypass in Apache Airflow
CVE-2021-35936
If remote logging is not used, the worker (in the case of CeleryExecutor) or the scheduler (in the case of LocalExecutor) runs a Flask logging server and is listening on a specific port and also binds on 0.0.0.0 by default. This logging server had no authentication and allows reading log files of DAG jobs. This issue affects Apache Airflow < 2.1.2.
Vulnerability class: Information Disclosure
EPSS: 0.040 (89.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Apache Airflow
- Apache Software Foundation Airflow — versions Apache Airflow
Weakness classification (CWE)
References
- security@apache.org (Mailing List, x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-35936?
- CVE-2021-35936 is a medium-severity vulnerability in Apache Airflow, classified under Information Disclosure. CVSS score: 5.3/10. Published 2021-08-16.
- How severe is CVE-2021-35936?
- Medium severity. CVSS v3 base score is 5.3 out of 10.