CVE-2023-39553
📋 TL;DR
This vulnerability allows attackers to pass malicious parameters when establishing connections with DrillHook in Apache Airflow Drill Provider, enabling file read access on the Airflow server. It affects organizations using Apache Airflow Drill Provider versions before 2.4.3. The vulnerability stems from improper input validation (CWE-20).
💻 Affected Systems
- Apache Airflow Drill Provider
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains unauthorized read access to sensitive files on the Airflow server, potentially exposing credentials, configuration files, or other sensitive data.
Likely Case
Unauthorized file reading from the Airflow server filesystem, potentially exposing configuration files, logs, or other accessible data.
If Mitigated
Limited impact due to proper network segmentation, access controls, and monitoring preventing exploitation attempts.
🎯 Exploit Status
Exploitation requires ability to establish connections with DrillHook. No public proof-of-concept has been identified in the provided references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.4.3 and later
Vendor Advisory: https://lists.apache.org/thread/ozpl0opmob49rkcz8svo8wkxyw1395sf
Restart Required: Yes
Instructions:
1. Identify current Apache Airflow Drill Provider version. 2. Upgrade to version 2.4.3 or later using pip: 'pip install --upgrade apache-airflow-providers-drill>=2.4.3'. 3. Restart Airflow services. 4. Verify the upgrade was successful.
🔧 Temporary Workarounds
Disable Drill Provider
allTemporarily disable the Apache Airflow Drill Provider if not required for operations
pip uninstall apache-airflow-providers-drill
Network Segmentation
allRestrict network access to Airflow instances to only trusted sources
🧯 If You Can't Patch
- Implement strict network access controls to limit who can connect to Airflow instances
- Monitor for unusual connection attempts or file access patterns from Airflow servers
🔍 How to Verify
Check if Vulnerable:
Check the installed version of Apache Airflow Drill Provider: 'pip show apache-airflow-providers-drill' and verify if version is below 2.4.3Check Version:
pip show apache-airflow-providers-drill | grep VersionVerify Fix Applied:
After upgrading, run 'pip show apache-airflow-providers-drill' and confirm version is 2.4.3 or higher📡 Detection & Monitoring
Log Indicators:
- Unusual connection attempts to DrillHook
- Unexpected file read operations from Airflow processes
- Errors related to Drill Provider connection parameters
Network Indicators:
- Unusual network traffic to Airflow instances from unexpected sources
- Connection attempts to DrillHook with malformed parameters
SIEM Query:
source="airflow.logs" AND ("DrillHook" OR "drill provider") AND (error OR failed OR malicious)🔗 References
- http://www.openwall.com/lists/oss-security/2023/08/11/1
- https://github.com/apache/airflow/pull/33074
- https://lists.apache.org/thread/ozpl0opmob49rkcz8svo8wkxyw1395sf
- http://www.openwall.com/lists/oss-security/2023/08/11/1
- https://github.com/apache/airflow/pull/33074
- https://lists.apache.org/thread/ozpl0opmob49rkcz8svo8wkxyw1395sf
