CVE-2019-19872
📋 TL;DR
CVE-2019-19872 is a command injection vulnerability in B&R Industrial Automation APROL's AprolLoader component that allows attackers to execute arbitrary commands on affected systems. This affects APROL installations before version R4.2 V7.08. Industrial control systems using vulnerable APROL versions are at risk of complete system compromise.
💻 Affected Systems
- B&R Industrial Automation APROL
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover leading to industrial process disruption, data theft, or physical damage to industrial equipment.
Likely Case
Unauthorized command execution leading to system compromise, data exfiltration, or lateral movement within industrial networks.
If Mitigated
Limited impact if proper network segmentation and access controls prevent exploitation attempts.
🎯 Exploit Status
CWE-77 indicates command injection vulnerability; unspecified attack scenario suggests exploitation details not publicly documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: R4.2 V7.08 and later
Vendor Advisory: https://www.br-automation.com/downloads_br_productcatalogue/BRP44400000000000000585952/APROL_R42_A1_ReleaseNotes_001.pdf
Restart Required: Yes
Instructions:
1. Download APROL R4.2 V7.08 or later from B&R Industrial Automation. 2. Backup current configuration and data. 3. Install the updated version following vendor documentation. 4. Restart affected systems. 5. Verify functionality post-update.
🔧 Temporary Workarounds
Network Segmentation
allIsolate APROL systems from untrusted networks and implement strict firewall rules.
Access Control Restrictions
allImplement strict authentication and authorization controls for APROL system access.
🧯 If You Can't Patch
- Implement network segmentation to isolate APROL systems from other networks
- Deploy intrusion detection systems to monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check APROL version in system administration interface or configuration files; versions before R4.2 V7.08 are vulnerable.Check Version:
Check through APROL administration interface or consult system documentation for version verification.Verify Fix Applied:
Verify APROL version is R4.2 V7.08 or later in system administration interface.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution via AprolLoader
- Unauthorized system access attempts
- Abnormal process creation
Network Indicators:
- Unexpected network connections from APROL systems
- Suspicious traffic to/from industrial control network
SIEM Query:
source="aprol_logs" AND (event="command_injection" OR process="AprolLoader" AND suspicious=true)