CVE-2024-54849
📋 TL;DR
This vulnerability in CP Plus CP-VNR-3104 video network recorders allows attackers to obtain the second RSA private key, potentially enabling decryption of sensitive data or man-in-the-middle attacks. This affects organizations using these specific devices for video surveillance and security monitoring.
💻 Affected Systems
- CP Plus CP-VNR-3104
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers decrypt all encrypted communications, intercept video feeds, access stored footage, and potentially compromise the entire surveillance system.
Likely Case
Attackers intercept and decrypt network traffic between the recorder and connected cameras/clients, gaining access to video feeds and configuration data.
If Mitigated
With proper network segmentation and monitoring, impact is limited to the specific device and its direct communications.
🎯 Exploit Status
The vulnerability involves extracting a private key, which is a straightforward process once the attack vector is identified. References suggest similar issues in related devices.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Contact CP Plus support for firmware updates. 2. Check vendor website for security advisories. 3. Apply any available firmware patches following vendor instructions.
🔧 Temporary Workarounds
Network Segmentation
allIsolate CP-VNR-3104 devices from untrusted networks and internet access
VPN Tunnel Implementation
allEncapsulate all device communications within VPN tunnels to protect against MITM attacks
🧯 If You Can't Patch
- Replace affected devices with updated models or different vendors
- Implement strict network access controls and monitor for unusual traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or serial console. If version is B3223P22C02424, device is vulnerable.Check Version:
Check via device web interface at System > Information or via serial console with appropriate vendor commandsVerify Fix Applied:
Verify firmware version has been updated to a version later than B3223P22C02424📡 Detection & Monitoring
Log Indicators:
- Unusual authentication attempts
- Firmware modification logs
- Unexpected configuration changes
Network Indicators:
- Unusual outbound connections from the device
- SSL/TLS certificate validation failures
- Unexpected traffic patterns to/from the device
SIEM Query:
source="cp-plus-vnr" AND (event_type="firmware_change" OR event_type="config_modification")