CVE-2024-31152
📋 TL;DR
The LevelOne WBR-6012 router with firmware R0.40e6 has an improper resource allocation vulnerability in its web application. Attackers can send crafted HTTP requests to cause the router to reboot, leading to network service interruptions. This affects users of this specific router model with the vulnerable firmware.
💻 Affected Systems
- LevelOne WBR-6012 router
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Repeated exploitation could cause persistent denial of service, making the router unavailable for extended periods and disrupting all network connectivity.
Likely Case
Temporary network outages from router reboots, causing service interruptions for connected devices.
If Mitigated
Minimal impact if router is behind firewall with restricted web interface access.
🎯 Exploit Status
Exploitation requires sending crafted HTTP requests to the web interface; no authentication needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
Check vendor website for firmware updates. If available, download latest firmware and apply through router web interface.
🔧 Temporary Workarounds
Restrict web interface access
allLimit access to router web interface to trusted IP addresses only
Disable remote management
allTurn off remote management feature if not needed
🧯 If You Can't Patch
- Replace router with supported model
- Implement network segmentation to isolate router from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web interface under System Status or similar sectionCheck Version:
Not applicable - check via web interfaceVerify Fix Applied:
Verify firmware version is no longer R0.40e6 after update📡 Detection & Monitoring
Log Indicators:
- Multiple HTTP requests to router web interface followed by reboot events
- Unusual HTTP request patterns
Network Indicators:
- HTTP traffic to router web interface with malformed requests
- Router becoming unresponsive
SIEM Query:
source="router_logs" AND (event="reboot" OR event="http_request") | stats count by src_ip