CVE-2024-54848
📋 TL;DR
This vulnerability in CP Plus CP-VNR-3104 network video recorders allows attackers to intercept and decrypt communications or perform man-in-the-middle attacks due to improper certificate handling. Organizations using these devices for video surveillance are affected, potentially exposing sensitive video feeds and control communications.
💻 Affected Systems
- CP Plus CP-VNR-3104 Network Video Recorder
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full access to encrypted video streams, administrative controls, and can inject malicious commands into the system, compromising entire surveillance infrastructure.
Likely Case
Unauthorized access to video surveillance feeds, potential exposure of sensitive areas, and interception of administrative communications.
If Mitigated
Limited exposure with proper network segmentation and certificate validation, though risk remains if devices are internet-facing.
🎯 Exploit Status
Requires network access to intercept communications and knowledge of certificate manipulation techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check with CP Plus for updated firmware
Vendor Advisory: Not provided in references
Restart Required: Yes
Instructions:
1. Contact CP Plus support for patched firmware. 2. Backup configuration. 3. Upload new firmware via web interface. 4. Reboot device. 5. Verify certificate handling is secure.
🔧 Temporary Workarounds
Network Segmentation
allIsolate NVR devices on separate VLAN with strict firewall rules
Certificate Validation Enforcement
allConfigure network devices to enforce strict certificate validation for NVR communications
🧯 If You Can't Patch
- Deploy network monitoring to detect MITM attempts and unusual certificate activity
- Implement strict access controls and network segmentation to limit exposure
🔍 How to Verify
Check if Vulnerable:
Check device firmware version in web interface: System > Information > Firmware VersionCheck Version:
curl -k https://[NVR_IP]/api/version or check web interfaceVerify Fix Applied:
Verify firmware version is updated and test certificate validation with tools like openssl s_client📡 Detection & Monitoring
Log Indicators:
- Certificate validation errors
- Unexpected certificate changes
- Failed SSL/TLS handshakes
Network Indicators:
- Unusual certificate authorities in traffic
- SSL/TLS interception patterns
- Unexpected certificate chains
SIEM Query:
event.category:network AND (ssl.certificate.issuer:unexpected OR tls.handshake.failed)