CVE-2023-39508
Execution with Unnecessary Privileges vulnerability in apache-airflow (PyPI)
What is CVE-2023-39508 About?
This vulnerability in Apache Airflow allows authenticated users to bypass access restrictions and execute code within the webserver context using the 'Run Task' feature. The impact is significant, potentially leading to privilege escalation and arbitrary code execution. Exploitation requires authentication but is straightforward for those with access to the 'Run Task' functionality.
Affected Software
- apache-airflow
- <2.6.0b1
- <2.6.0
Technical Details
The 'Run Task' feature in Apache Airflow versions before 2.6.0 is designed to execute tasks but an insufficient implementation allows authenticated users to bypass intended restrictions. This includes the ability to execute arbitrary code within the context of the Apache Airflow webserver process, leveraging its privileges. Furthermore, the feature allows users to circumvent DAG access limitations, effectively granting unauthorized access to DAGs they should not be able to interact with. This bypass capability is due to the 'Run Task' functionality not properly validating user permissions or sanitizing execution parameters, enabling code injection into the webserver's execution flow.
What is the Impact of CVE-2023-39508?
Successful exploitation may allow attackers to gain arbitrary code execution in the context of the webserver, bypass access controls for DAGs, and escalate privileges.
What is the Exploitability of CVE-2023-39508?
Exploitation requires an authenticated user with access to the 'Run Task' feature in Apache Airflow. The complexity is low once authenticated, as the feature itself becomes the vector for bypassing restrictions and executing code. No special conditions are noted beyond having access to this specific UI component. The exploit is remote, requiring only web access to the Airflow instance. The presence of the 'Run Task' feature on affected versions and an authenticated session are the primary prerequisites.
What are the Known Public Exploits?
| PoC Author | Link | Commentary |
|---|---|---|
| No known exploits | ||
What are the Available Fixes for CVE-2023-39508?
Available Upgrade Options
- apache-airflow
- <2.6.0b1 → Upgrade to 2.6.0b1
- apache-airflow
- <2.6.0 → Upgrade to 2.6.0
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Book a demoAdditional Resources
- https://github.com/apache/airflow/pull/29706
- https://github.com/apache/airflow/commit/101d59c4b88ab979d305b8d96f612c27c8a44aa8
- https://nvd.nist.gov/vuln/detail/CVE-2023-39508
- https://github.com/apache/airflow
- https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2023-134.yaml
- https://osv.dev/vulnerability/GHSA-269x-pg5c-5xgm
- http://seclists.org/fulldisclosure/2023/Jul/43
- https://lists.apache.org/thread/j2nkjd0zqvtqk85s6ywpx3c35pvzyx15
- https://lists.apache.org/thread/j2nkjd0zqvtqk85s6ywpx3c35pvzyx15
- https://github.com/apache/airflow/pull/29706
What are Similar Vulnerabilities to CVE-2023-39508?
Similar Vulnerabilities: CVE-2023-46361 , CVE-2023-25586 , CVE-2023-29479 , CVE-2022-40916 , CVE-2022-24345
