CVE-2023-49109
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Apache DolphinScheduler servers due to improper input validation (CWE-94). It affects all users running versions before 3.2.1, potentially enabling full system compromise.
💻 Affected Systems
- Apache DolphinScheduler
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover, data theft, and lateral movement within the network.
Likely Case
Unauthorized code execution leading to service disruption or data exfiltration.
If Mitigated
Limited impact if isolated in a segmented network with strict access controls.
🎯 Exploit Status
Exploitation likely straightforward due to remote and unauthenticated nature.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.2.1
Vendor Advisory: https://lists.apache.org/thread/5b6yq2gov0fsy9x5dkvo8ws4rr45vkn8
Restart Required: Yes
Instructions:
1. Backup data and configurations. 2. Download version 3.2.1 from the official Apache repository. 3. Stop the DolphinScheduler service. 4. Replace the installation with the new version. 5. Restart the service and verify functionality.
🔧 Temporary Workarounds
Network Segmentation
linuxRestrict access to DolphinScheduler to trusted IPs only.
iptables -A INPUT -p tcp --dport <port> -s <trusted_ip> -j ACCEPT
iptables -A INPUT -p tcp --dport <port> -j DROP
🧯 If You Can't Patch
- Isolate the system from the internet and untrusted networks.
- Implement strict access controls and monitor for suspicious activity.
🔍 How to Verify
Check if Vulnerable:
Check the version in the DolphinScheduler web UI or configuration files; if below 3.2.1, it is vulnerable.Check Version:
grep version /path/to/dolphinscheduler/conf/application.yamlVerify Fix Applied:
Confirm the version is 3.2.1 or higher and test functionality for anomalies.📡 Detection & Monitoring
Log Indicators:
- Unusual process executions or errors in DolphinScheduler logs
Network Indicators:
- Suspicious inbound requests to DolphinScheduler ports
SIEM Query:
source="dolphinscheduler.log" AND (event="execution" OR error="code injection")🔗 References
- http://www.openwall.com/lists/oss-security/2024/02/20/4
- https://github.com/apache/dolphinscheduler/pull/14991
- https://lists.apache.org/thread/5b6yq2gov0fsy9x5dkvo8ws4rr45vkn8
- https://lists.apache.org/thread/6kgsl93vtqlbdk6otttl0d8wmlspk0m5
- http://www.openwall.com/lists/oss-security/2024/02/20/4
- https://github.com/apache/dolphinscheduler/pull/14991
- https://lists.apache.org/thread/5b6yq2gov0fsy9x5dkvo8ws4rr45vkn8
- https://lists.apache.org/thread/6kgsl93vtqlbdk6otttl0d8wmlspk0m5
