CVE-2024-52778
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on affected DCME devices via a specific PHP file. It affects multiple DCME series devices running vulnerable firmware versions. Attackers can gain full control of compromised devices without authentication.
💻 Affected Systems
- DCME-320
- DCME-520
- DCME-320-L
- DCME-720
📦 What is this software?
Dcme 320 Firmware by Dcnetworks
Dcme 520 Firmware by Dcnetworks
Dcme 720 Firmware by Dcnetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to install persistent backdoors, steal sensitive data, pivot to internal networks, or use devices as botnet nodes.
Likely Case
Attackers deploy cryptocurrency miners, ransomware, or use devices as proxies for further attacks, causing service disruption and data loss.
If Mitigated
With proper network segmentation and monitoring, impact limited to isolated device compromise with minimal lateral movement.
🎯 Exploit Status
Public exploit details available in referenced blog post. Simple HTTP request to vulnerable endpoint can trigger RCE.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Contact DCME vendor for patching guidance. 2. Check vendor website for firmware updates. 3. Apply latest firmware if available. 4. Reboot device after update.
🔧 Temporary Workarounds
Block access to vulnerable endpoint
allUse web server or firewall to block access to /function/audit/newstatistics/mon_stat_hist.php
# For Apache: RewriteRule ^/function/audit/newstatistics/mon_stat_hist\.php - [F,L]
# For Nginx: location ~ /function/audit/newstatistics/mon_stat_hist\.php { deny all; }
Disable web interface if not needed
allTurn off HTTP/HTTPS services on affected devices
# Device-specific commands - consult vendor documentation
🧯 If You Can't Patch
- Isolate affected devices in separate VLAN with strict firewall rules
- Implement network-based intrusion detection to monitor for exploit attempts
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or SSH. Compare against affected versions list.Check Version:
# Via web interface: System > About or via SSH: cat /etc/versionVerify Fix Applied:
Verify firmware version is above vulnerable versions. Test if /function/audit/newstatistics/mon_stat_hist.php endpoint is accessible.📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /function/audit/newstatistics/mon_stat_hist.php with suspicious parameters
- Unusual process execution from web server user
- System command execution in web logs
Network Indicators:
- HTTP POST requests to vulnerable endpoint with encoded payloads
- Outbound connections from device to unknown IPs post-exploit
SIEM Query:
web.url="*/function/audit/newstatistics/mon_stat_hist.php*" AND (web.method="POST" OR web.status=200)