CVE-2024-10428
📋 TL;DR
This critical vulnerability allows remote attackers to execute arbitrary commands on affected WAVLINK routers by manipulating the dhcpGateway parameter in the set_ipv6 function of firewall.cgi. Attackers can gain full control of the device without authentication. All users of affected WAVLINK router models with firmware up to October 28, 2022 are vulnerable.
💻 Affected Systems
- WAVLINK WN530H4
- WAVLINK WN530HG4
- WAVLINK WN572HG3
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover allowing attackers to install persistent backdoors, pivot to internal networks, intercept all network traffic, or use the device as part of a botnet.
Likely Case
Remote code execution leading to device compromise, credential theft, network surveillance, and potential lateral movement to other internal systems.
If Mitigated
Limited impact if devices are behind firewalls with strict inbound filtering and network segmentation prevents lateral movement.
🎯 Exploit Status
Public exploit documentation exists and the vulnerability requires minimal technical skill to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Vendor has not responded to disclosure. Consider replacing affected devices or implementing strict network controls.
🔧 Temporary Workarounds
Disable IPv6 Administration Interface
allDisable IPv6 configuration through the web interface if not required
Network Access Control
linuxRestrict access to router administration interface using firewall rules
iptables -A INPUT -p tcp --dport 80 -s trusted_network -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
🧯 If You Can't Patch
- Immediately isolate affected routers in a dedicated VLAN with strict egress filtering
- Implement network monitoring for unusual outbound connections from router IPs
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface at System Status > Firmware Version. If version date is 20221028 or earlier, device is vulnerable.Check Version:
curl -s http://router-ip/cgi-bin/status.cgi | grep FirmwareVerify Fix Applied:
No fix available to verify. Monitor for firmware updates from vendor.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /cgi-bin/firewall.cgi with dhcpGateway parameter containing shell metacharacters
- Unexpected process execution from web server context
Network Indicators:
- Outbound connections from router to unknown external IPs
- Unusual traffic patterns from router management interface
SIEM Query:
source="router_logs" AND uri="/cgi-bin/firewall.cgi" AND (param="dhcpGateway" AND value MATCHES "[;|&`$()]+")