CVE-2024-11120
📋 TL;DR
This CVE describes an OS command injection vulnerability in certain end-of-life GeoVision devices that allows unauthenticated remote attackers to execute arbitrary system commands. The vulnerability is actively being exploited in the wild to compromise devices and incorporate them into botnets. Organizations using affected GeoVision devices are at immediate risk.
💻 Affected Systems
- GeoVision video surveillance devices
📦 What is this software?
Gvlx 4 Firmware by Geovision
Gvlx 4 Firmware by Geovision
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to data exfiltration, lateral movement within networks, persistent backdoor installation, and device enrollment in botnets for DDoS attacks or cryptomining.
Likely Case
Device compromise and enrollment in Mirai-based botnets for DDoS attacks, with potential for credential theft and network reconnaissance.
If Mitigated
Limited impact if devices are properly segmented and monitored, though exploitation attempts may still cause service disruption.
🎯 Exploit Status
Active exploitation observed in the wild with Mirai botnet variants targeting vulnerable devices.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: N/A
Vendor Advisory: https://www.twcert.org.tw/en/cp-139-8237-26d7a-2.html
Restart Required: No
Instructions:
No official patch available as devices are EOL. Immediate decommissioning and replacement with supported devices is recommended.
🔧 Temporary Workarounds
Network Segmentation and Isolation
allIsolate affected devices in separate network segments with strict firewall rules to prevent external access.
Access Control Restrictions
allImplement strict network access controls to limit device exposure to only necessary management networks.
🧯 If You Can't Patch
- Immediately disconnect affected devices from the internet and critical networks
- Replace EOL devices with supported alternatives as soon as possible
🔍 How to Verify
Check if Vulnerable:
Check device model and firmware version against known affected EOL GeoVision devices. Monitor for unexpected network connections or process execution.Check Version:
Check device web interface or console for firmware version information (specific command varies by model).Verify Fix Applied:
Verify devices are either decommissioned or properly segmented with no external internet access.📡 Detection & Monitoring
Log Indicators:
- Unexpected command execution in system logs
- Unusual process creation
- Failed authentication attempts followed by command execution
Network Indicators:
- Outbound connections to known botnet C2 servers
- Unusual port scanning activity from device
- Sudden spikes in network traffic
SIEM Query:
source="device_logs" AND (process="sh" OR process="bash") AND command="*;*" OR command="*|*" OR command="*`*"