CVE-2019-6823
📋 TL;DR
This vulnerability allows unauthenticated remote attackers to execute arbitrary code on ProClima systems by exploiting a code injection flaw. All ProClima versions prior to 8.0.0 are affected, potentially compromising building management systems.
💻 Affected Systems
- ProClima
📦 What is this software?
Proclima by Schneider Electric
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover with attacker gaining full control over the building management system, potentially affecting physical building operations.
Likely Case
Remote code execution leading to data theft, system disruption, or lateral movement within the network.
If Mitigated
Limited impact if system is isolated behind firewalls with strict network segmentation and access controls.
🎯 Exploit Status
The vulnerability requires no authentication and is remotely exploitable, making it relatively easy to weaponize.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.0.0
Vendor Advisory: https://www.schneider-electric.com/en/download/document/SEVD-2019-162-01/
Restart Required: Yes
Instructions:
1. Download ProClima version 8.0.0 from Schneider Electric 2. Backup current configuration 3. Install the update 4. Restart the system 5. Verify the update was successful
🔧 Temporary Workarounds
Network Segmentation
allIsolate ProClima systems from untrusted networks and internet access
Access Control Lists
allImplement strict firewall rules to limit access to ProClima systems
🧯 If You Can't Patch
- Implement strict network segmentation to isolate ProClima systems
- Deploy intrusion detection/prevention systems to monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check ProClima version in system settings or administration interfaceCheck Version:
Check through ProClima administration interface or system settingsVerify Fix Applied:
Verify version number shows 8.0.0 or higher in system information📡 Detection & Monitoring
Log Indicators:
- Unusual process execution
- Unexpected network connections from ProClima system
- Authentication bypass attempts
Network Indicators:
- Unusual traffic patterns to/from ProClima ports
- Suspicious payloads in network traffic
SIEM Query:
source="proclima" AND (event_type="process_execution" OR event_type="network_connection") AND severity=high