CVE-2023-30404
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Aigital Wireless-N Repeater Mini_Router devices by sending a specially crafted HTTP request to the sysCmd parameter. It affects users of the vulnerable firmware version, potentially giving attackers full control of the device. The high CVSS score indicates critical severity with low attack complexity.
💻 Affected Systems
- Aigital Wireless-N Repeater Mini_Router
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover allowing installation of persistent malware, network traffic interception, lateral movement to other devices, and use as botnet node.
Likely Case
Unauthenticated attacker gains shell access to modify device settings, steal credentials, or disrupt network connectivity.
If Mitigated
With proper network segmentation and access controls, impact limited to isolated network segment with no critical assets.
🎯 Exploit Status
Simple HTTP POST request with command injection payload. Public technical details available in referenced blog posts.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: http://aigital.com (no specific advisory found)
Restart Required: No
Instructions:
No official patch available. Check vendor website for firmware updates. Consider device replacement if no fix provided.
🔧 Temporary Workarounds
Network Segmentation
allIsolate vulnerable devices in separate VLAN without internet access or access to critical systems
Access Control Lists
linuxRestrict HTTP access to management interface to trusted IP addresses only
iptables -A INPUT -p tcp --dport 80 -s TRUSTED_IP -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
🧯 If You Can't Patch
- Replace device with supported model from reputable vendor
- Disable web management interface if possible via device settings
🔍 How to Verify
Check if Vulnerable:
Check firmware version in web interface. If version is v0.131229, device is vulnerable. Test with non-destructive command like 'echo test' via curl to sysCmd parameter.Check Version:
Check web interface at http://device-ip/ or use nmap service detectionVerify Fix Applied:
Verify firmware version has changed from v0.131229. Test same exploit attempt should fail.📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to formSysCmd endpoint
- Unusual command execution in system logs
- Multiple failed login attempts followed by successful command execution
Network Indicators:
- HTTP traffic to device on port 80 with sysCmd parameter containing shell metacharacters
- Outbound connections from repeater to unusual destinations
SIEM Query:
source="web_logs" AND uri="*formSysCmd*" AND (param="*sysCmd=*&*" OR param="*|*" OR param="*;*" OR param="*`*" OR param="*$(*")