CVE-2024-41316
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on TOTOLINK A6000R routers by injecting malicious commands through the ifname parameter in the apcli_cancel_wps function. Attackers can gain full control of affected devices, potentially compromising network security. All users running the vulnerable firmware version are affected.
💻 Affected Systems
- TOTOLINK A6000R
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to persistent backdoor installation, network traffic interception, lateral movement to other devices, and participation in botnets.
Likely Case
Remote code execution allowing attackers to modify router settings, steal credentials, or use the device as a pivot point for further attacks.
If Mitigated
Limited impact if device is behind strict firewall rules, not internet-facing, and network segmentation prevents lateral movement.
🎯 Exploit Status
Public proof-of-concept code exists in GitHub repositories, making exploitation straightforward for attackers with basic skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check TOTOLINK official website for firmware updates. 2. Download latest firmware for A6000R. 3. Access router admin interface. 4. Navigate to firmware upgrade section. 5. Upload and apply new firmware. 6. Reboot router.
🔧 Temporary Workarounds
Disable WPS functionality
allDisable Wi-Fi Protected Setup (WPS) feature to potentially block the vulnerable function from being accessed.
Access router admin interface -> Wireless Settings -> Disable WPS
Restrict management access
allLimit router management interface access to trusted IP addresses only.
Access router admin interface -> Security/Firewall -> Restrict admin access to specific IPs
🧯 If You Can't Patch
- Isolate affected routers in separate VLAN with strict firewall rules
- Implement network monitoring for suspicious command execution attempts
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface under System Status or Firmware Upgrade section.Check Version:
Login to router admin interface and navigate to System Status pageVerify Fix Applied:
Verify firmware version has been updated to a version newer than V1.0.1-B20201211.2000.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed WPS connection attempts
- Suspicious ifname parameter values in web requests
Network Indicators:
- Unexpected outbound connections from router
- Traffic to known malicious IPs
- Unusual port scanning from router
SIEM Query:
source="router_logs" AND ("apcli_cancel_wps" OR "ifname=" AND command_execution)🔗 References
- https://gist.github.com/yanggao017/690f3e4b5045bbdf1209baa30fb53065
- https://github.com/yanggao017/vuln/blob/main/TOTOLINK/A6000R/CI_2_apcli_cancel_wps/README.md
- https://gist.github.com/yanggao017/690f3e4b5045bbdf1209baa30fb53065
- https://github.com/yanggao017/vuln/blob/main/TOTOLINK/A6000R/CI_2_apcli_cancel_wps/README.md
