CVE-2023-0861
📋 TL;DR
This vulnerability allows authenticated users of NetModule NSRW web administration interface to execute arbitrary operating system commands with elevated privileges by injecting unsanitized input. It affects NetModule NSRW routers running vulnerable firmware versions. Attackers could gain complete control of affected devices.
💻 Affected Systems
- NetModule NSRW routers
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing persistent backdoor installation, network pivoting, data exfiltration, and use in botnets or ransomware attacks.
Likely Case
Authenticated attackers gaining root access to manipulate device configuration, intercept traffic, or use device as foothold for lateral movement.
If Mitigated
Limited to authenticated users only, with proper network segmentation preventing lateral movement and command execution monitoring detecting exploitation attempts.
🎯 Exploit Status
Exploitation requires authenticated access but command injection vulnerabilities are typically straightforward to exploit once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.3.0.119, 4.4.0.118, 4.6.0.105, 4.7.0.103 or later
Vendor Advisory: https://share.netmodule.com/public/system-software/4.7/4.7.0.103/NRSW-RN-4.7.0.103.pdf
Restart Required: Yes
Instructions:
1. Download latest firmware from NetModule support portal. 2. Backup current configuration. 3. Upload and install firmware update via web interface. 4. Reboot device. 5. Verify version is patched.
🔧 Temporary Workarounds
Restrict web interface access
allLimit access to administration interface to trusted IP addresses only
Configure firewall rules to restrict access to port 80/443 to management network only
Disable web interface if not needed
allTemporarily disable web administration interface if CLI or other management methods are available
Disable HTTP/HTTPS services in device configuration
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected devices from critical systems
- Enable detailed logging and monitoring for command execution attempts and unusual administrative activity
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface (System > About) or CLI command 'show version'Check Version:
show versionVerify Fix Applied:
Verify firmware version is 4.3.0.119, 4.4.0.118, 4.6.0.105, 4.7.0.103 or higher📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed authentication attempts followed by successful login
- Administrative actions from unexpected IP addresses
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns inconsistent with normal operation
SIEM Query:
source="netmodule-router" AND (event_type="command_execution" OR user="admin" AND action="system_command")🔗 References
- https://onekey.com/blog/security-advisory-netmodule-multiple-vulnerabilities
- https://share.netmodule.com/public/system-software/4.7/4.7.0.103/NRSW-RN-4.7.0.103.pdf
- https://onekey.com/blog/security-advisory-netmodule-multiple-vulnerabilities
- https://share.netmodule.com/public/system-software/4.7/4.7.0.103/NRSW-RN-4.7.0.103.pdf
