CVE-2023-50379
📋 TL;DR
This vulnerability allows a cluster operator with existing access to inject malicious code into Apache Ambari requests, potentially gaining root privileges on the cluster's main host. It affects Apache Ambari installations prior to version 2.7.8. Organizations using vulnerable versions of Apache Ambari for cluster management are at risk.
💻 Affected Systems
- Apache Ambari
📦 What is this software?
Ambari by Apache
⚠️ Risk & Real-World Impact
Worst Case
An attacker with cluster operator privileges gains complete root control over the cluster's main host, enabling data theft, service disruption, and lateral movement throughout the entire cluster infrastructure.
Likely Case
A malicious insider or compromised cluster operator account exploits the vulnerability to execute arbitrary code with elevated privileges, potentially compromising sensitive cluster data and configurations.
If Mitigated
With proper access controls and network segmentation, the impact is limited to the Ambari management plane, preventing lateral movement to production workloads.
🎯 Exploit Status
Exploitation requires authenticated cluster operator access. The vulnerability is a code injection (CWE-94) that can lead to remote code execution.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.7.8
Vendor Advisory: https://lists.apache.org/thread/jglww6h6ngxpo1r6r5fx7ff7z29lnvv8
Restart Required: Yes
Instructions:
1. Backup current Ambari configuration and database. 2. Download Apache Ambari 2.7.8 from official Apache repositories. 3. Stop all Ambari services. 4. Upgrade Ambari to version 2.7.8 following the official upgrade guide. 5. Restart Ambari services and verify functionality.
🔧 Temporary Workarounds
Restrict Cluster Operator Access
allLimit cluster operator privileges to only trusted personnel and implement strict access controls.
Network Segmentation
allIsolate Ambari management interface from production networks and implement strict firewall rules.
🧯 If You Can't Patch
- Implement strict least-privilege access controls for all cluster operator accounts.
- Monitor and audit all Ambari API requests for suspicious patterns or code injection attempts.
🔍 How to Verify
Check if Vulnerable:
Check the Ambari version by accessing the Ambari web UI or running 'ambari-server --version' on the Ambari server host.Check Version:
ambari-server --versionVerify Fix Applied:
After upgrading, verify the version shows 2.7.8 or higher and test that cluster management functions work correctly.📡 Detection & Monitoring
Log Indicators:
- Unusual API requests to Ambari endpoints containing suspicious payloads
- Unexpected process execution or privilege escalation on Ambari server host
Network Indicators:
- Suspicious HTTP requests to Ambari API endpoints with encoded or obfuscated payloads
SIEM Query:
source="ambari" AND (http_request CONTAINS "malicious_pattern" OR process_execution="unexpected")