Description Preview
Apache Airflow versions 1.10.10 and below contain a command injection vulnerability (CWE-78) when using the CeleryExecutor. If an attacker can directly connect to the message broker (Redis or RabbitMQ), they can inject malicious commands that will be executed by the Celery worker, resulting in arbitrary command execution on the host system.
Overview
This vulnerability affects Apache Airflow, an open-source platform to programmatically author, schedule, and monitor workflows. The issue specifically impacts deployments using the CeleryExecutor, which is a distributed task execution system that relies on message brokers like Redis or RabbitMQ. The vulnerability allows attackers with access to the message broker to inject arbitrary commands that will be executed by the Celery worker processes. This can lead to full system compromise, including data theft, service disruption, or further lateral movement within the network. The vulnerability is particularly dangerous in multi-tenant environments or where the message broker is exposed to untrusted networks.
Remediation
To address this vulnerability, users should:
- Upgrade to Apache Airflow version 1.10.11 or later which contains fixes for this issue.
- If immediate upgrading is not possible, implement additional security measures:
- Restrict access to the message broker (Redis/RabbitMQ) to only trusted hosts
- Use strong authentication for the message broker
- Configure network segmentation to isolate the message broker
- Implement TLS encryption for broker communications
- Monitor Celery worker logs for suspicious activity
- Review your Airflow deployment configuration to ensure that the message broker is not exposed to untrusted networks.
- Consider implementing a least-privilege security model for all components of your Airflow deployment.
References
- Apache Airflow Security Advisory: https://lists.apache.org/thread.html/r7255cf0be3566f23a768e2a04b40fb09e52fcd1872695428ba9afe91%40%3Cusers.airflow.apache.org%3E
- CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'): https://cwe.mitre.org/data/definitions/78.html
- Apache Airflow Documentation: https://airflow.apache.org/docs/
- OWASP Command Injection Prevention: https://owasp.org/www-community/attacks/Command_Injection
Industry ExposureMost to leastThis section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.
- Retail TradeRetail Trade
- Arts, Entertainment & RecreationArts, Entertainment & Recreation
- Educational ServicesEducational Services
- Management of Companies & EnterprisesManagement of Companies & Enterprises
- Transportation & WarehousingTransportation & Warehousing
- Accommodation & Food ServicesAccommodation & Food Services
- Administrative, Support, Waste Management & Remediation ServicesAdministrative, Support, Waste Management & Remediation Services
- Agriculture, Forestry Fishing & HuntingAgriculture, Forestry Fishing & Hunting
- ConstructionConstruction
- Finance and InsuranceFinance and Insurance
- Health Care & Social AssistanceHealth Care & Social Assistance
- InformationInformation
- ManufacturingManufacturing
- MiningMining
- Other Services (except Public Administration)Other Services (except Public Administration)
- Professional, Scientific, & Technical ServicesProfessional, Scientific, & Technical Services
- Public AdministrationPublic Administration
- Real Estate Rental & LeasingReal Estate Rental & Leasing
- UtilitiesUtilities
- Wholesale TradeWholesale Trade
