CVE-2024-57590
📋 TL;DR
TRENDnet TEW-632BRP routers have a critical OS command injection vulnerability in the ntp_sync.cgi interface that allows remote attackers to execute arbitrary commands on the device. Attackers can exploit this by sending specially crafted POST requests to the vulnerable endpoint. This affects all users of TRENDnet TEW-632BRP v1.010B31 devices.
💻 Affected Systems
- TRENDnet TEW-632BRP
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to install persistent backdoors, intercept network traffic, pivot to internal networks, or brick the device.
Likely Case
Remote code execution leading to device takeover, credential theft, and use as a foothold for further network attacks.
If Mitigated
Limited impact if device is behind strict firewall rules and not internet-facing, though internal exploitation remains possible.
🎯 Exploit Status
The GitHub reference contains technical details and likely exploit code. Command injection vulnerabilities are easily weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
Check TRENDnet website for firmware updates. If available, download latest firmware and upload via web interface under Administration > Firmware Upgrade.
🔧 Temporary Workarounds
Block CGI Interface Access
linuxUse firewall rules to block access to the ntp_sync.cgi endpoint
iptables -A INPUT -p tcp --dport 80 -m string --string "ntp_sync.cgi" --algo bm -j DROP
iptables -A INPUT -p tcp --dport 443 -m string --string "ntp_sync.cgi" --algo bm -j DROP
Disable Remote Management
allTurn off remote administration in router settings
🧯 If You Can't Patch
- Isolate device on separate VLAN with strict firewall rules
- Replace with supported hardware if vendor has abandoned security updates
🔍 How to Verify
Check if Vulnerable:
Check firmware version in web interface under Status > Device Information. If version is v1.010B31, device is vulnerable.Check Version:
curl -s http://router-ip/status.cgi | grep -i versionVerify Fix Applied:
After firmware update, verify version is no longer v1.010B31. Test ntp_sync.cgi endpoint with safe payloads.📡 Detection & Monitoring
Log Indicators:
- POST requests to /cgi-bin/ntp_sync.cgi with unusual parameters
- System logs showing unexpected command execution
Network Indicators:
- Unusual outbound connections from router
- POST requests to ntp_sync.cgi with shell metacharacters
SIEM Query:
source="router_logs" AND (uri="/cgi-bin/ntp_sync.cgi" AND method="POST")