CVE-2023-44013
📋 TL;DR
This vulnerability in Tenda AC10U routers allows remote attackers to execute arbitrary code via a stack overflow in the fromSetIpMacBind function. Attackers can exploit this by sending specially crafted requests to the vulnerable device. All users of affected Tenda AC10U routers with the vulnerable firmware are at risk.
💻 Affected Systems
- Tenda AC10U
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise leading to router takeover, credential theft, network traffic interception, and lateral movement to connected devices.
Likely Case
Remote code execution allowing attackers to install malware, create backdoors, or use the router as part of a botnet.
If Mitigated
Limited impact if network segmentation isolates the router and external access is restricted.
🎯 Exploit Status
Public GitHub repository contains exploit details. The vulnerability requires network access but no authentication.
🛠️ 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 AC10U
3. Access router admin interface
4. Navigate to firmware upgrade section
5. Upload and install new firmware
6. Reboot router
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to router administration interface
Network segmentation
allIsolate router management interface to trusted network segment
🧯 If You Can't Patch
- Replace vulnerable router with different model or vendor
- Implement strict firewall rules to block all external access to router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version matches affected version, device is vulnerable.Check Version:
Check via router web interface or SSH if enabled: show version or similar commandVerify Fix Applied:
Verify firmware version has been updated to a version newer than the affected version.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to router management interface
- Multiple failed exploit attempts
- Unexpected firmware modification logs
Network Indicators:
- Unusual traffic patterns to router management port
- Suspicious payloads in HTTP requests to router
SIEM Query:
source="router_logs" AND (uri="/goform/setIpMacBind" OR method="POST" AND user_agent="exploit")