CVE-2024-41318
📋 TL;DR
This CVE describes a command injection vulnerability in TOTOLINK A6000R routers that allows attackers to execute arbitrary commands on the device. The vulnerability exists in the apcli_wps_gen_pincode function via the ifname parameter. Users of affected TOTOLINK A6000R routers are at risk.
💻 Affected Systems
- TOTOLINK A6000R
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the router leading to full network access, data interception, malware deployment, and use as a pivot point to attack other devices on the network.
Likely Case
Router takeover allowing network traffic monitoring, DNS hijacking, credential theft, and installation of persistent backdoors.
If Mitigated
Limited impact if network segmentation isolates the router and external access is restricted.
🎯 Exploit Status
Public proof-of-concept code is available in the provided GitHub references. The vulnerability appears to be remotely exploitable without authentication.
🛠️ 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 after update.
🔧 Temporary Workarounds
Disable WPS functionality
allDisable Wi-Fi Protected Setup (WPS) feature if not needed, as the vulnerable function is related to WPS PIN generation.
Restrict management access
allLimit router management interface access to trusted IP addresses only.
🧯 If You Can't Patch
- Segment the router on a dedicated network VLAN to limit lateral movement
- Implement strict firewall rules to block all unnecessary inbound traffic to the router
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via admin interface. If version is V1.0.1-B20201211.2000, the device is vulnerable.Check Version:
Login to router admin interface and check System Status or Firmware Information pageVerify Fix Applied:
After updating firmware, verify the version has changed from V1.0.1-B20201211.2000 to a newer version.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in router logs
- Multiple failed WPS-related requests
- Unexpected system process creation
Network Indicators:
- Unusual outbound connections from router
- DNS queries to suspicious domains
- Unexpected port scans originating from router
SIEM Query:
source="router_logs" AND (process="apcli_wps_gen_pincode" OR command="*;*" OR command="*|*")🔗 References
- https://gist.github.com/yanggao017/dc88fb2e29291503addf1e7aa3775578
- https://github.com/yanggao017/vuln/blob/main/TOTOLINK/A6000R/CI_5_apcli_wps_gen_pincode/README.md
- https://gist.github.com/yanggao017/dc88fb2e29291503addf1e7aa3775578
- https://github.com/yanggao017/vuln/blob/main/TOTOLINK/A6000R/CI_5_apcli_wps_gen_pincode/README.md
