CVE-2023-23080
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on affected Tenda products via command injection. It affects multiple Tenda camera and surveillance products running vulnerable firmware versions. Attackers can potentially gain full control of the devices.
💻 Affected Systems
- Tenda CP7
- Tenda CP3 v.10
- Tenda IT7-PCS
- Tenda IT7-LCS
- Tenda IT7-PRS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise leading to persistent backdoor installation, lateral movement to other network devices, and use in botnets or ransomware attacks.
Likely Case
Remote code execution allowing attackers to steal camera footage, disable surveillance, or use device for DDoS attacks.
If Mitigated
Limited impact if devices are isolated in separate VLANs with strict firewall rules and network segmentation.
🎯 Exploit Status
Public proof-of-concept code exists in GitHub repositories. Exploitation requires minimal technical skill due to simple command injection.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates
2. Download latest firmware for your specific model
3. Access device web interface
4. Navigate to firmware upgrade section
5. Upload new firmware file
6. Wait for reboot and verify version
🔧 Temporary Workarounds
Network Isolation
allPlace affected devices in isolated VLAN with strict firewall rules
Access Control
linuxBlock all inbound internet access to device management interfaces
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Immediately disconnect affected devices from internet and place behind strict firewall
- Implement network segmentation to isolate vulnerable devices from critical systems
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or SSH if enabled. Compare against affected version list.Check Version:
Check via web interface at http://[device-ip]/ or via SSH: cat /etc/versionVerify Fix Applied:
Verify firmware version has been updated to a version newer than those listed in affected versions.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed login attempts followed by successful access
- Unexpected process creation
Network Indicators:
- Unusual outbound connections from device
- Traffic to known malicious IPs
- Port scanning originating from device
SIEM Query:
source="tenda-device" AND (event="command_injection" OR cmd="*;*" OR cmd="*|*" OR cmd="*`*`)