Vulnerability · Published Feb 17, 2021 · Assigned by apache

CVE-2021-26559CWE-284 Improper Access Control on Configurations Endpoint for the Stable API

Medium 6.5

In plain English

A medium-severity improper access control in Apache Airflow from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.8% (higher than 87% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.5Medium

Exploit odds (30 days)2.8%top 13.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Improper Access Control on Configurations Endpoint for the Stable API of Apache Airflow allows users with Viewer or User role to get Airflow Configurations including sensitive information even when `[webserver] expose_config` is set to `False` in `airflow.cfg`. This allowed a privilege escalation attack. This issue affects Apache Airflow 2.0.0.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	apache-airflow	2.0.1rc1	GHSA-ffw3-6mp6-jmvj
PyPI	apache-airflow	2.0.1	PYSEC-2021-2

Affected products (as reported)

Vendor	Product	Versions
Apache Software Foundation	Apache Airflow	Apache Airflow 2.0.0

Weakness: CWE-284

References

https://lists.apache.org/thread.html/r3b3787700279ec361308cbefb7c2cce2acb26891a12ce864e4a13c8d%40%3Cusers.airflow.apache.org%3E x_refsource_MISC
[oss-security] 20210217 CVE-2021-26559: Apache Airflow 2.0.0: CWE-284 Improper Access Control on Configurations Endpoint for the Stable API mailing-list, x_refsource_MLIST
[announce] 20210217 CVE-2021-26559: Apache Airflow: CWE-284 Privilege Escalation Attack mailing-list, x_refsource_MLIST