CVE-2024-11981
📋 TL;DR
This CVE describes an authentication bypass vulnerability in certain Billion Electric router models that allows unauthenticated attackers to access arbitrary web pages without credentials. This affects organizations and individuals using vulnerable Billion Electric router models, potentially exposing sensitive configuration interfaces and data.
💻 Affected Systems
- Billion Electric routers (specific models not detailed in provided references)
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full administrative access to router configuration, enabling network takeover, credential harvesting, traffic interception, and deployment of persistent malware.
Likely Case
Unauthenticated access to router web interface leading to configuration changes, network disruption, and potential credential exposure.
If Mitigated
Limited exposure if routers are behind firewalls with strict access controls, though the vulnerability remains present.
🎯 Exploit Status
Authentication bypass suggests simple HTTP request manipulation could trigger the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified
Vendor Advisory: Not provided in references
Restart Required: No
Instructions:
1. Check Billion Electric website for security advisories
2. Download latest firmware for your router model
3. Upload firmware via web interface
4. Apply update and verify functionality
🔧 Temporary Workarounds
Network Segmentation
allIsolate vulnerable routers from internet and restrict internal access
Access Control Lists
linuxImplement firewall rules to restrict access to router management interface
iptables -A INPUT -p tcp --dport 80 -s trusted_network -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s trusted_network -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Replace vulnerable routers with supported models from different vendors
- Implement network monitoring for unauthorized access attempts to router interfaces
🔍 How to Verify
Check if Vulnerable:
Attempt to access router web interface pages without authentication using curl: curl -v http://router-ip/admin_page.htmlCheck Version:
Check router web interface status page or use: curl -s http://router-ip/status | grep FirmwareVerify Fix Applied:
After firmware update, repeat vulnerability check to confirm authentication is now required📡 Detection & Monitoring
Log Indicators:
- Unauthenticated access to admin pages in router logs
- Multiple failed authentication attempts followed by successful access
Network Indicators:
- HTTP requests to router management interface from unexpected IPs
- Unusual traffic patterns to router web ports
SIEM Query:
source="router_logs" AND (url="*/admin*" OR url="*/config*") AND auth_status="unauthenticated"