CVE-2021-35936
MEDIUM5.3EPSS 1.9%No Authentication on Logging Server
Published: 8/30/2021Modified: 5/20/2025
Description
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.
Affected packages (3)
- Bitnami/airflowfrom 0, < 2.1.2
- PyPI/apache-airflowfrom 0, < 2.1.2
- PyPI/apache-airflowfrom 0, < 2.1.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
References (9)
- ADVISORYhttps://github.com/advisories/GHSA-m6h2-jx9v-58w6
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-35936
- PATCHhttps://github.com/apache/airflow
- WEBhttps://github.com/apache/airflow/commit/27265516d2b897585f5019ecd820cfe5471fd351
- WEBhttps://github.com/apache/airflow/commit/7a5bb88ad78d600fbb1676a55752597928115bd8
- WEBhttps://github.com/apache/airflow/commit/d772f38f843b9add5319a01cf51a844145b01f63
- WEBhttps://github.com/apache/airflow/compare/2.1.1...2.1.2
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2021-122.yaml
- WEBhttps://lists.apache.org/thread.html/r53d6bd7b0a66f92ddaf1313282f10fec802e71246606dd30c16536df%40%3Cusers.airflow.apache.org%3E