CVE-2020-28332
📋 TL;DR
This vulnerability allows attackers to install malicious firmware on Barco wePresent WiPG-1600W devices by bypassing signature verification. Organizations using affected firmware versions are susceptible to complete device compromise. The flaw enables remote code execution and persistent backdoor installation.
💻 Affected Systems
- Barco wePresent WiPG-1600W
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover allowing persistent network foothold, credential theft, lateral movement, and deployment of ransomware or botnets across the network.
Likely Case
Attackers install backdoored firmware to maintain persistent access, intercept network traffic, and use the device as a pivot point for further attacks.
If Mitigated
With proper network segmentation and monitoring, impact is limited to the device itself, though it could still be used for network reconnaissance.
🎯 Exploit Status
Public proof-of-concept demonstrates firmware modification and upload. Exploitation requires network access to device management interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.5.1.9 or later
Vendor Advisory: https://www.barco.com/en/support/software/R33050069?majorVersion=2&minorVersion=5&patchVersion=1&buildVersion=9
Restart Required: Yes
Instructions:
1. Download firmware version 2.5.1.9 or later from Barco support portal. 2. Log into device web interface. 3. Navigate to System > Firmware Update. 4. Upload new firmware file. 5. Wait for automatic reboot and verification.
🔧 Temporary Workarounds
Network Segmentation
allIsolate wePresent devices on separate VLAN with strict firewall rules limiting management interface access.
Access Control
allRestrict management interface access to specific administrative IP addresses only.
🧯 If You Can't Patch
- Physically disconnect devices from network if not critically needed
- Implement strict network monitoring for unusual firmware update attempts
🔍 How to Verify
Check if Vulnerable:
Check firmware version in web interface at System > Information. If version matches affected list, device is vulnerable.Check Version:
curl -k https://[device-ip]/api/v1/system/info | grep firmware_versionVerify Fix Applied:
After update, verify firmware version shows 2.5.1.9 or later in System > Information page.📡 Detection & Monitoring
Log Indicators:
- Unexpected firmware update events
- Failed signature verification attempts
- Unusual administrative login patterns
Network Indicators:
- HTTP POST requests to /api/v1/system/firmware/upload from unauthorized sources
- Unusual outbound connections from device
SIEM Query:
source="wePresent" AND (event="firmware_update" OR url_path="/api/v1/system/firmware/upload")🔗 References
- http://packetstormsecurity.com/files/160164/Barco-wePresent-Insecure-Firmware-Image.html
- https://korelogic.com/Resources/Advisories/KL-001-2020-009.txt
- http://packetstormsecurity.com/files/160164/Barco-wePresent-Insecure-Firmware-Image.html
- https://korelogic.com/Resources/Advisories/KL-001-2020-009.txt
