CVE-2024-46451
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on TOTOLINK AC1200 T8 routers by exploiting a buffer overflow in the setWiFiAclRules function. Attackers can gain full control of affected devices, potentially compromising network security. Only users of specific TOTOLINK router models with vulnerable firmware are affected.
💻 Affected Systems
- TOTOLINK AC1200 T8
📦 What is this software?
T8 Firmware by Totolink
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to persistent backdoor installation, network traffic interception, credential theft, and lateral movement to other network devices.
Likely Case
Remote code execution allowing attackers to modify router settings, intercept traffic, or use the device as a foothold for further attacks.
If Mitigated
Limited impact if devices are behind firewalls with strict inbound filtering and network segmentation prevents lateral movement.
🎯 Exploit Status
The GitHub reference contains technical details that could facilitate exploit development. Buffer overflow vulnerabilities in network devices are commonly weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check TOTOLINK official website for firmware updates. 2. Download latest firmware for AC1200 T8. 3. Access router web interface. 4. Navigate to firmware upgrade section. 5. Upload and apply new firmware. 6. Reboot router after update completes.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to the vulnerable web interface by disabling remote administration features.
Network Segmentation
allIsolate the router on a separate VLAN with strict firewall rules limiting inbound connections.
🧯 If You Can't Patch
- Replace vulnerable devices with supported models from different vendors
- Implement strict network monitoring and intrusion detection for suspicious traffic to/from the router
🔍 How to Verify
Check if Vulnerable:
Access router web interface, navigate to System Status or About page, check firmware version matches v4.1.5cu.861_B20230220.Check Version:
curl -s http://router-ip/cgi-bin/luci/ | grep -i versionVerify Fix Applied:
After firmware update, verify version no longer matches vulnerable version. Test setWiFiAclRules functionality with fuzzing tools if available.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to setWiFiAclRules endpoint
- Large payloads in HTTP requests to router management interface
- Multiple failed authentication attempts followed by successful exploitation
Network Indicators:
- Unusual outbound connections from router to unknown IPs
- Traffic patterns suggesting command and control communication
- Port scanning originating from router
SIEM Query:
source="router-logs" AND (uri="/cgi-bin/luci" OR method="POST") AND (bytes>10000 OR status=500)