CVE-2024-24328
📋 TL;DR
This CVE describes a command injection vulnerability in TOTOLINK A3300R routers that allows attackers to execute arbitrary commands on the device. The vulnerability exists in the setMacFilterRules function via the enable parameter. This affects users of TOTOLINK A3300R routers with vulnerable firmware versions.
💻 Affected Systems
- TOTOLINK A3300R
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise leading to persistent backdoor installation, network traffic interception, lateral movement to other devices, and participation in botnets.
Likely Case
Router takeover allowing attackers to modify network settings, intercept traffic, and use the device as a pivot point for further attacks.
If Mitigated
Limited impact if device is behind firewall with restricted WAN access and proper network segmentation.
🎯 Exploit Status
Exploit details are publicly available in GitHub repositories. Authentication may be required to reach the vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check TOTOLINK website for firmware updates
2. Download latest firmware for A3300R
3. Access router web interface
4. Navigate to firmware upgrade section
5. Upload and apply new firmware
6. Reboot router
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to router web interface
Restrict web interface access
allLimit access to router management interface to trusted IPs only
🧯 If You Can't Patch
- Isolate vulnerable routers in separate network segment
- Implement strict firewall rules to block all inbound traffic to router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface at System Status > Firmware VersionCheck Version:
Not applicable - check via web interfaceVerify Fix Applied:
Verify firmware version has been updated to a version newer than V17.0.0cu.557_B20221024📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to setMacFilterRules endpoint
- Suspicious command execution in system logs
Network Indicators:
- Unusual outbound connections from router
- Traffic to known malicious IPs
SIEM Query:
source="router_logs" AND (uri="/cgi-bin/setMacFilterRules" OR command="*;*" OR command="*|*")