CVE-2023-51217
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on TenghuTOS TWS-200 devices by sending specially crafted commands to the ping page component. Attackers can gain full control of affected devices without authentication. Organizations using TenghuTOS TWS-200 with vulnerable firmware are affected.
💻 Affected Systems
- TenghuTOS TWS-200
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise leading to network infiltration, data theft, ransomware deployment, or use as a botnet node.
Likely Case
Unauthorized remote code execution allowing attackers to install backdoors, modify configurations, or disrupt network services.
If Mitigated
Limited impact with proper network segmentation and access controls preventing external exploitation.
🎯 Exploit Status
The GitHub reference contains technical details that could be used to create exploits. The vulnerability requires no authentication and has low complexity for exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No vendor advisory found
Restart Required: No
Instructions:
No official patch available. Check with TenghuTOS vendor for updated firmware. If unavailable, implement workarounds and consider device replacement.
🔧 Temporary Workarounds
Disable ping page access
allRestrict or disable access to the ping page component through firewall rules or device configuration
Configure firewall to block access to the ping page URL/port
Disable ping functionality in device web interface if possible
Network segmentation
allIsolate TWS-200 devices in separate VLANs with strict access controls
Create separate VLAN for network devices
Implement ACLs to restrict traffic to TWS-200 management interfaces
🧯 If You Can't Patch
- Remove devices from internet-facing positions and place behind firewalls with strict ingress filtering
- Implement network monitoring and intrusion detection specifically for TWS-200 traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check firmware version in device web interface or CLI. If version is V4.0-201809201424, device is vulnerable.Check Version:
Check device web interface at System > Firmware or use CLI command specific to TenghuTOS devicesVerify Fix Applied:
Verify firmware has been updated to a version newer than V4.0-201809201424. Test ping functionality with controlled payloads.📡 Detection & Monitoring
Log Indicators:
- Unusual ping commands in device logs
- Unexpected process execution
- Configuration changes without authorization
Network Indicators:
- Unusual traffic patterns to/from TWS-200 devices
- Malformed ping requests to device management interfaces
SIEM Query:
source_ip="TWS-200_IP" AND (event_type="command_execution" OR url_contains="ping") AND payload_contains_special_chars