CVE-2024-54847
📋 TL;DR
This vulnerability in CP Plus CP-VNR-3104 network video recorders allows attackers to access Diffie-Hellman parameters, potentially enabling man-in-the-middle attacks to intercept sensitive data or compromise device communications. It affects organizations using these specific NVR devices with vulnerable firmware versions.
💻 Affected Systems
- CP Plus CP-VNR-3104 Network Video Recorder
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers intercept unencrypted video feeds, access administrative credentials, and compromise the entire surveillance system, potentially using it as an entry point to internal networks.
Likely Case
Attackers intercept video streams and device communications, compromising surveillance data privacy and potentially accessing other network-connected devices.
If Mitigated
With proper network segmentation and monitoring, impact is limited to the NVR device itself without lateral movement to other systems.
🎯 Exploit Status
Public research demonstrates exploitation techniques; attackers need network access to the device.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Monitor CP Plus security advisories for updates.
🔧 Temporary Workarounds
Network Segmentation
allIsolate NVR devices on separate VLANs with strict firewall rules to limit attack surface
Disable Remote Access
allDisable any internet-facing access to the NVR management interface
🧯 If You Can't Patch
- Segment the NVR on an isolated network with no internet access
- Implement network monitoring for unusual traffic patterns to/from the NVR
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or serial console; version B3223P22C02424 is confirmed vulnerableCheck Version:
Check via web interface at http://[device-ip]/ or via serial console connectionVerify Fix Applied:
No official fix available; verify workarounds by testing network isolation and access controls📡 Detection & Monitoring
Log Indicators:
- Unusual authentication attempts
- Multiple failed connection attempts to NVR management interface
Network Indicators:
- Unexpected outbound connections from NVR
- Unusual traffic patterns to/from NVR ports
SIEM Query:
source_ip=[NVR_IP] AND (event_type="authentication_failure" OR port_scan_detected)