CVE-2023-51964
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Tenda AX1803 routers by exploiting a stack overflow in the setIptvInfo function. Attackers can send specially crafted requests to the iptv.stb.port parameter to gain control of affected devices. All users running the vulnerable firmware version are affected.
💻 Affected Systems
- Tenda AX1803
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to install persistent malware, pivot to internal networks, intercept all network traffic, or brick the device.
Likely Case
Remote code execution leading to device takeover, creation of botnet nodes, or credential theft from connected devices.
If Mitigated
Limited impact if devices are behind firewalls with strict inbound filtering and network segmentation.
🎯 Exploit Status
The vulnerability is in a web interface function and requires no authentication. Public technical details exist but no confirmed weaponized exploits.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda support for firmware updates. 2. Download latest firmware from official Tenda website. 3. Log into router admin interface. 4. Navigate to System Tools > Firmware Upgrade. 5. Upload and install new firmware. 6. Reboot router.
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to the vulnerable web interface
Network segmentation
allIsolate router management interface from untrusted networks
🧯 If You Can't Patch
- Replace affected devices with patched alternatives
- Implement strict firewall rules blocking all inbound access to router management interface
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router admin interface under System Status or System ToolsCheck Version:
Login to router web interface and check System Status pageVerify Fix Applied:
Verify firmware version is no longer v1.0.0.1 after update📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/setIptvInfo
- Multiple failed authentication attempts followed by successful access
- Abnormal process creation in router logs
Network Indicators:
- Unusual outbound connections from router
- Traffic spikes to/from router management port
- Suspicious payloads in HTTP requests to router
SIEM Query:
source="router_logs" AND (uri="/goform/setIptvInfo" OR process="exploit")