CVE-2023-50989
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on Tenda i29 routers through the pingSet function. Attackers can gain full control of affected devices, potentially compromising network security. All users of Tenda i29 v1.0 V1.0.0.5 are affected.
💻 Affected Systems
- Tenda i29
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to network compromise, data exfiltration, and use as pivot point for internal attacks
Likely Case
Router compromise allowing traffic interception, DNS manipulation, and credential theft
If Mitigated
Limited impact if device is isolated with strict network segmentation and access controls
🎯 Exploit Status
Public exploit details available on GitHub, command injection via pingSet parameter
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: http://tenda.com
Restart Required: No
Instructions:
Check Tenda website for firmware updates. If available, download and install through web interface.
🔧 Temporary Workarounds
Disable remote management
allTurn off remote administration access to prevent external exploitation
Network segmentation
allIsolate router management interface to trusted network segment only
🧯 If You Can't Patch
- Replace affected devices with patched or alternative models
- Implement strict firewall rules to block access to router management interface from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web interface. If version is v1.0.0.5, device is vulnerable.Check Version:
Check web interface at http://router-ip or use nmap/router fingerprintingVerify Fix Applied:
Verify firmware version has been updated to a version later than v1.0.0.5📡 Detection & Monitoring
Log Indicators:
- Unusual ping commands in router logs
- Multiple failed authentication attempts to management interface
Network Indicators:
- Unexpected outbound connections from router
- DNS queries to suspicious domains
SIEM Query:
source="router_logs" AND ("pingSet" OR "command injection" OR unusual shell commands)