CVE-2023-7209
📋 TL;DR
A critical vulnerability in Uniway Router up to version 2.0 allows remote attackers to cause denial of service by exploiting the device reset handler at /boaform/device_reset.cgi. This affects all systems running vulnerable Uniway Router software, potentially disrupting network connectivity. The vendor has not responded to disclosure attempts.
💻 Affected Systems
- Uniway Router
📦 What is this software?
Uw 101x Firmware by Uniwayinfo
Uw 302vp Firmware by Uniwayinfo
⚠️ Risk & Real-World Impact
Worst Case
Complete router failure requiring physical reset or replacement, causing extended network downtime for all connected devices.
Likely Case
Router becomes unresponsive, requiring manual reboot and temporary loss of network connectivity.
If Mitigated
Minimal impact with proper network segmentation and redundant systems in place.
🎯 Exploit Status
Exploit details are publicly available and the attack requires minimal technical skill to execute.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: Yes
Instructions:
No official patch available. Consider replacing affected routers with supported alternatives.
🔧 Temporary Workarounds
Block Access to Vulnerable Endpoint
linuxUse firewall rules to block access to /boaform/device_reset.cgi
iptables -A INPUT -p tcp --dport 80 -m string --string "/boaform/device_reset.cgi" --algo bm -j DROP
iptables -A INPUT -p tcp --dport 443 -m string --string "/boaform/device_reset.cgi" --algo bm -j DROP
Disable Web Management Interface
allTurn off web-based management if not required
🧯 If You Can't Patch
- Isolate vulnerable routers in separate network segments with strict access controls
- Implement network monitoring for unusual traffic patterns to /boaform/device_reset.cgi
🔍 How to Verify
Check if Vulnerable:
Check router web interface version or attempt to access http://[router-ip]/boaform/device_reset.cgi (use caution as this may trigger the vulnerability)Check Version:
Check router web interface or use nmap -sV -p 80,443 [router-ip] to identify service versionsVerify Fix Applied:
Verify firewall rules are blocking the vulnerable endpoint or that web interface is disabled📡 Detection & Monitoring
Log Indicators:
- Multiple requests to /boaform/device_reset.cgi in short time
- Router reboot events without administrative action
Network Indicators:
- Unusual traffic patterns to router management interface
- HTTP requests to device_reset.cgi from unexpected sources
SIEM Query:
source="router_logs" AND (uri="/boaform/device_reset.cgi" OR event="reboot") | stats count by src_ip