CVE-2024-5622
📋 TL;DR
An untrusted search path vulnerability in B&R APROL's AprolConfigureCCServices allows authenticated local attackers to execute arbitrary code with elevated privileges. This affects B&R APROL versions R 4.2-07P3 and earlier, and R 4.4-00P3 and earlier. Attackers can exploit this to gain SYSTEM/root privileges on affected systems.
💻 Affected Systems
- B&R APROL
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with SYSTEM/root privileges, allowing installation of persistent malware, data theft, and lateral movement within industrial control networks.
Likely Case
Privilege escalation leading to unauthorized access to industrial control systems, potential disruption of manufacturing processes, and data exfiltration.
If Mitigated
Limited impact if proper access controls, network segmentation, and least privilege principles are implemented.
🎯 Exploit Status
Requires authenticated local access and knowledge of the system. No public exploit code available at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to versions after R 4.2-07P3 and R 4.4-00P3
Vendor Advisory: https://www.br-automation.com/fileadmin/SA24P2014_Multiple_vulnerabilities_in_BR_APROL.pdf-367290ae.pdf
Restart Required: Yes
Instructions:
1. Download latest APROL updates from B&R support portal. 2. Apply patches according to vendor documentation. 3. Restart affected APROL services. 4. Verify patch installation.
🔧 Temporary Workarounds
Restrict local user access
allLimit local user accounts to only essential personnel and implement least privilege principles
Implement application whitelisting
allUse application control solutions to prevent execution of unauthorized binaries
🧯 If You Can't Patch
- Implement strict access controls and limit local user accounts to trusted personnel only
- Segment APROL systems from other network segments and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check APROL version via control panel or system information. If version is R 4.2-07P3 or earlier, or R 4.4-00P3 or earlier, system is vulnerable.Check Version:
Check APROL version in system settings or via vendor-provided version checking toolsVerify Fix Applied:
Verify APROL version is updated beyond vulnerable versions. Check patch installation logs and verify AprolConfigureCCServices functionality.📡 Detection & Monitoring
Log Indicators:
- Unauthorized privilege escalation attempts
- Suspicious process creation by AprolConfigureCCServices
- Unexpected DLL/executable loading
Network Indicators:
- Unusual outbound connections from APROL systems
- Lateral movement attempts from APROL hosts
SIEM Query:
Process creation where parent process contains 'AprolConfigureCCServices' AND (command line contains suspicious parameters OR child process has elevated privileges)