CVE-2022-38170: Overly permissive umask for daemons

Severity: medium (CVSS 4.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-09-02 · updated 2026-06-17
Weakness: CWE-732

Description

In Apache Airflow prior to 2.3.4, an insecure umask was configured for numerous Airflow components when running with the `--daemon` flag which could result in a race condition giving world-writable files in the Airflow home directory and allowing local users to expose arbitrary file contents via the webserver.

Affected products

Apache Airflow: before 2.3.4 — fixed in 2.3.4

How to fix

Upgrade to a fixed version: Apache Airflow 2.3.4. Check the vendor advisory for mitigations.

References

http://www.openwall.com/lists/oss-security/2022/09/02/12
http://www.openwall.com/lists/oss-security/2022/09/02/3
http://www.openwall.com/lists/oss-security/2022/09/21/2
https://lists.apache.org/thread/zn8mbbb1j2od5nc9zhrvb7rpsrg1vvzv
http://www.openwall.com/lists/oss-security/2022/09/02/12
http://www.openwall.com/lists/oss-security/2022/09/02/3
http://www.openwall.com/lists/oss-security/2022/09/21/2
https://lists.apache.org/thread/zn8mbbb1j2od5nc9zhrvb7rpsrg1vvzv

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