CVE-2023-25691 Overview
An Improper Input Validation vulnerability has been identified in the Apache Airflow Google Provider. This security flaw affects Apache Airflow Google Provider versions before 8.10.0, allowing remote attackers to potentially compromise the confidentiality, integrity, and availability of affected systems without requiring authentication or user interaction.
Apache Airflow is a widely-used open-source platform for orchestrating complex data pipelines and workflows. The Google Provider extends Airflow's capabilities to integrate with Google Cloud Platform services. This vulnerability in the provider component could allow malicious actors to exploit insufficient input validation to manipulate data or execute unauthorized operations.
Critical Impact
This vulnerability allows unauthenticated remote attackers to potentially achieve full system compromise through improper input validation, affecting confidentiality, integrity, and availability of systems running vulnerable Apache Airflow Google Provider versions.
Affected Products
- Apache Airflow Google Provider versions prior to 8.10.0
- Systems utilizing apache-airflow-providers-google package
- Data pipeline environments integrated with Google Cloud Platform services via Airflow
Discovery Timeline
- 2023-02-24 - CVE-2023-25691 published to NVD
- 2025-03-11 - Last updated in NVD database
Technical Details for CVE-2023-25691
Vulnerability Analysis
This vulnerability is classified as CWE-20 (Improper Input Validation), which occurs when the software receives input or data but fails to validate or incorrectly validates that the input has the properties required to process the data safely and correctly.
In the context of the Apache Airflow Google Provider, insufficient input validation could allow attackers to submit specially crafted input that bypasses expected constraints. This can lead to various attack scenarios depending on how the unvalidated input is subsequently processed by the application.
The vulnerability is particularly concerning because it can be exploited remotely over the network without requiring any privileges or user interaction, making it highly accessible to potential attackers.
Root Cause
The root cause of this vulnerability lies in inadequate input validation mechanisms within the Apache Airflow Google Provider component. When processing user-supplied data or parameters related to Google Cloud Platform integrations, the affected code paths fail to properly sanitize or validate input before using it in operations.
This validation gap allows malicious input to pass through unchecked, potentially leading to unintended behavior, data manipulation, or exploitation of downstream components that trust the input has been properly validated.
Attack Vector
The attack vector for CVE-2023-25691 is network-based, meaning attackers can exploit this vulnerability remotely without requiring local access to the target system.
The attack scenario involves:
- An attacker identifies an Apache Airflow instance running a vulnerable version of the Google Provider (versions prior to 8.10.0)
- The attacker crafts malicious input designed to bypass input validation controls
- The malicious input is submitted to the vulnerable component through network-accessible interfaces
- Due to improper validation, the input is processed, potentially allowing the attacker to compromise system confidentiality, integrity, or availability
The vulnerability does not require authentication or user interaction, significantly lowering the barrier for exploitation. For technical details on the vulnerability, refer to the Apache Mailing List Thread and the GitHub Pull Request that addresses this issue.
Detection Methods for CVE-2023-25691
Indicators of Compromise
- Unusual or malformed requests to Apache Airflow endpoints handling Google Cloud integrations
- Unexpected data processing patterns or errors in Airflow task logs
- Anomalous network traffic patterns to Airflow worker nodes or schedulers
- Unauthorized access attempts to Google Cloud Platform resources through Airflow connections
Detection Strategies
- Implement log monitoring for Apache Airflow scheduler and worker components to identify unusual input patterns
- Deploy network-based intrusion detection systems (IDS) to detect anomalous traffic targeting Airflow services
- Monitor for unexpected Google Cloud API calls originating from Airflow environments
- Review Airflow DAG execution logs for signs of manipulation or unauthorized operations
Monitoring Recommendations
- Enable verbose logging for Apache Airflow Google Provider operations
- Configure alerting for failed validation or unexpected error conditions in Airflow logs
- Implement application performance monitoring (APM) to detect anomalous behavior patterns
- Regularly audit Airflow connections and Google Cloud service account permissions
How to Mitigate CVE-2023-25691
Immediate Actions Required
- Upgrade Apache Airflow Google Provider to version 8.10.0 or later immediately
- Audit existing Airflow DAGs that utilize Google Provider operators for potential exposure
- Review access controls and network segmentation for Airflow deployment infrastructure
- Implement additional input validation at the application boundary as a defense-in-depth measure
Patch Information
Apache has addressed this vulnerability in Apache Airflow Google Provider version 8.10.0. Organizations should upgrade to this version or later to remediate CVE-2023-25691.
The fix is documented in GitHub Pull Request #29497, which implements proper input validation to prevent exploitation of this vulnerability. Additional details are available in the Apache Mailing List announcement.
Workarounds
- Restrict network access to Apache Airflow services using firewall rules and network segmentation
- Implement Web Application Firewall (WAF) rules to filter potentially malicious input targeting Airflow endpoints
- Apply the principle of least privilege to Google Cloud service accounts used by Airflow
- Monitor and audit all Google Provider operations until patching can be completed
# Upgrade Apache Airflow Google Provider to patched version
pip install --upgrade apache-airflow-providers-google>=8.10.0
# Verify installed version
pip show apache-airflow-providers-google | grep Version
# Alternatively, specify exact version in requirements.txt
echo "apache-airflow-providers-google>=8.10.0" >> requirements.txt
pip install -r requirements.txt
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
