CVE-2020-15744
📋 TL;DR
A stack-based buffer overflow vulnerability in the ONVIF server component of Victure PC420 smart cameras allows remote attackers to execute arbitrary code on affected devices. This affects Victure PC420 cameras running firmware version 1.2.2 and earlier. Successful exploitation gives attackers full control over the compromised camera.
💻 Affected Systems
- Victure PC420 Smart Camera
📦 What is this software?
Pc420 Firmware by Govicture
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover allowing attackers to pivot to internal networks, disable camera functionality, install persistent malware, or use the device for botnet activities.
Likely Case
Remote code execution leading to camera compromise, video stream interception, device repurposing for DDoS attacks, or credential theft from the device.
If Mitigated
Limited impact with proper network segmentation and access controls preventing exploitation attempts from reaching vulnerable devices.
🎯 Exploit Status
Detailed technical analysis and proof-of-concept code are publicly available. The vulnerability requires no authentication and has straightforward exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: Yes
Instructions:
1. Check Victure website for firmware updates 2. Download latest firmware 3. Upload to camera via web interface 4. Reboot camera after update
🔧 Temporary Workarounds
Network Segmentation
allIsolate cameras on separate VLAN with strict firewall rules blocking all inbound traffic except necessary management access.
Disable ONVIF Server
allTurn off ONVIF functionality if not required for camera operation.
🧯 If You Can't Patch
- Remove cameras from internet-facing networks immediately
- Implement strict network access controls allowing only trusted IP addresses to communicate with cameras
🔍 How to Verify
Check if Vulnerable:
Check firmware version in camera web interface. If version is 1.2.2 or lower, device is vulnerable.Check Version:
Check via web interface at http://[camera-ip]/ or use ONVIF device discovery toolsVerify Fix Applied:
Verify firmware version is higher than 1.2.2 after update. Test ONVIF functionality to ensure it still works properly.📡 Detection & Monitoring
Log Indicators:
- Unusual ONVIF protocol traffic patterns
- Multiple failed ONVIF requests
- Device reboot events
Network Indicators:
- Unusual traffic to camera ONVIF port (typically 80/443)
- Suspicious payloads in ONVIF SOAP requests
- Outbound connections from camera to unknown destinations
SIEM Query:
source_ip=[camera-ip] AND (port=80 OR port=443) AND protocol="http" AND (uri CONTAINS "/onvif" OR user_agent CONTAINS "ONVIF")