CVE-2023-28716
📋 TL;DR
This vulnerability allows authenticated users of mySCADA myPRO versions 8.26.0 and prior to inject arbitrary operating system commands through vulnerable parameters. This could lead to complete system compromise of SCADA/ICS environments. Organizations using affected myPRO versions for industrial control systems are at risk.
💻 Affected Systems
- mySCADA myPRO
📦 What is this software?
Mypro by Myscada
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attackers to execute arbitrary commands with system privileges, potentially disrupting industrial processes, stealing sensitive data, or causing physical damage.
Likely Case
Authenticated attackers gaining shell access to the underlying operating system, allowing lateral movement, data exfiltration, or installation of persistent malware.
If Mitigated
Limited impact if proper network segmentation, least privilege access, and command validation are implemented, though risk remains elevated.
🎯 Exploit Status
Requires authenticated access but command injection vulnerabilities are typically easy to exploit once identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.26.1 or later
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-23-096-06
Restart Required: Yes
Instructions:
1. Download myPRO version 8.26.1 or later from mySCADA. 2. Backup current configuration and data. 3. Stop myPRO services. 4. Install updated version. 5. Restart services and verify functionality.
🔧 Temporary Workarounds
Input Validation Enhancement
allImplement strict input validation on all user-controllable parameters to reject shell metacharacters
# Requires code modification - implement parameter validation in application code
Network Segmentation
allIsolate myPRO systems from untrusted networks and implement strict firewall rules
# Firewall rules will vary by environment
🧯 If You Can't Patch
- Implement strict network segmentation to isolate myPRO systems from untrusted networks
- Enforce least privilege access controls and monitor authenticated user activity closely
🔍 How to Verify
Check if Vulnerable:
Check myPRO version in administration interface or configuration files. Versions 8.26.0 and earlier are vulnerable.Check Version:
Check version in myPRO web interface or configuration files (location varies by installation)Verify Fix Applied:
Verify installation of version 8.26.1 or later and test parameter inputs for command injection attempts.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns
- Multiple failed authentication attempts followed by successful login and parameter manipulation
- Suspicious process creation from myPRO service account
Network Indicators:
- Unexpected outbound connections from myPRO systems
- Unusual traffic patterns to/from myPRO ports
SIEM Query:
source="myPRO" AND (event_type="command_execution" OR parameter="*;*" OR parameter="*|*" OR parameter="*`*" OR parameter="*$(*")