CVE-2023-51954
📋 TL;DR
CVE-2023-51954 is a critical stack overflow vulnerability in Tenda AX1803 routers that allows remote attackers to execute arbitrary code by sending specially crafted requests to the iptv.stb.port parameter. This affects all users running the vulnerable firmware version, potentially giving attackers full control over the router.
💻 Affected Systems
- Tenda AX1803
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete router compromise, credential theft, network traffic interception, and lateral movement into connected devices.
Likely Case
Router takeover enabling man-in-the-middle attacks, DNS hijacking, and botnet recruitment.
If Mitigated
Limited impact if router is behind firewall with restricted WAN access and strong network segmentation.
🎯 Exploit Status
Public proof-of-concept demonstrates exploitation via HTTP POST request to vulnerable endpoint.
🛠️ 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 3. Access router admin panel 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 admin interface
Network segmentation
allIsolate router management interface to separate VLAN
🧯 If You Can't Patch
- Replace affected router with different model
- Place router behind dedicated firewall with strict ingress filtering
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin panel under System Status or Firmware Upgrade sectionCheck Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
Verify firmware version is no longer v1.0.0.1 after update📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP POST requests to /goform/setIptv
- Multiple failed login attempts followed by successful exploit
Network Indicators:
- Unusual outbound connections from router
- DNS queries to suspicious domains
- Port scanning from router IP
SIEM Query:
source="router.log" AND ("formSetIptv" OR "iptv.stb.port") AND status=200