CVE-2023-42781 Explained : Impact and Mitigation

Apache Airflow is prone to a vulnerability that permits an authorized user to access information about task instances in other Directed Acyclic Graphs (DAGs). Upgrading to version 2.7.3 or later is recommended to mitigate this issue.

Understanding CVE-2023-42781

This CVE pertains to a security flaw in Apache Airflow, specifically affecting versions prior to 2.7.3.

What is CVE-2023-42781?

Apache Airflow, versions before 2.7.3, has a vulnerability that allows an authorized user who has access to read specific DAGs only, to read information about task instances in other DAGs. This vulnerability is distinct from CVE-2023-42663 but leads to a similar outcome. Users of Apache Airflow are advised to upgrade to version 2.7.3 or newer to mitigate the risk associated with this vulnerability.

The Impact of CVE-2023-42781

The vulnerability in Apache Airflow can be exploited by an authorized user to view task instance information from other DAGs. This could potentially lead to unauthorized access to sensitive data and compromise the confidentiality of task details.

Technical Details of CVE-2023-42781

Apache Airflow version prior to 2.7.3 are affected by this vulnerability. Below are further technical details:

Vulnerability Description

The flaw allows an authorized user to read information about task instances in other DAGs, even when restricted to specific DAGs only.

Affected Systems and Versions

Product: Apache Airflow
Vendor: Apache Software Foundation
Vulnerable Version: < 2.7.3

Exploitation Mechanism

Authorized users with access to particular DAGs can exploit this vulnerability to access task instance details from unrelated DAGs.

Mitigation and Prevention

To address CVE-2023-42781 and enhance system security, consider the following mitigation strategies:

Immediate Steps to Take

Users of Apache Airflow should upgrade to version 2.7.3 or newer to eliminate the risk associated with this vulnerability. It's crucial to promptly apply patches to safeguard systems against potential exploits.

Long-Term Security Practices

Implement robust access controls and permissions within Apache Airflow to restrict users' ability to view task instances outside their designated DAGs. Regular security audits and monitoring can help identify unauthorized access attempts.

Patching and Updates

Stay informed about security updates and patches released by Apache Software Foundation. Regularly update Apache Airflow to the latest version to address known vulnerabilities and enhance system security.