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                               CERT-Renater

                    Note d'Information No. 2024/VULN057
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DATE                : 25/01/2024

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Apache Airflow versions prior
                                         to 2.6.1,
                     Apache Airflow CNCF Kubernetes provider versions
                                    prior to 7.0.0.

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https://lists.apache.org/thread/89x3q6lz5pykrkr1fkr04k4rfn9pvnv9
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CVE-2023-51702: Apache Airflow CNCF Kubernetes provider, Apache
Airflow: Kubernetes configuration file saved without encryption in
the Metadata and logged as plain text in the Triggerer service
Severity: moderate

Affected versions:

- Apache Airflow CNCF Kubernetes provider 5.2.0 before 7.0.0
- Apache Airflow 2.3.0 before 2.6.1


Description:

Since version 5.2.0, when using deferrable mode with the path of a
Kubernetes configuration file for authentication, the Airflow worker
serializes this configuration file as a dictionary and sends it to
the triggerer by storing it in metadata without any encryption.
Additionally, if used with an Airflow version between 2.3.0 and
2.6.0, the configuration dictionary will be logged as plain text
in the triggerer service without masking. This allows anyone with
access to the metadata or triggerer log to obtain the configuration
*file and use it to access the Kubernetes cluster.

This behavior was changed in version 7.0.0, which stopped serializing
the file contents and started providing the file path instead to read
the contents into the trigger. Users are recommended to upgrade to
version 7.0.0, which fixes this issue.


Credit:

Hussein Awala (finder)
Hussein Awala (remediation developer)


References:

https://github.com/apache/airflow/pull/29498
https://github.com/apache/airflow/pull/30110
https://github.com/apache/airflow/pull/36492
https://airflow.apache.org/
https://www.cve.org/CVERecord?id=CVE-2023-51702

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