CVE-2023-51599
📋 TL;DR
This vulnerability in Honeywell Saia PG5 Controls Suite allows remote attackers to execute arbitrary code by exploiting a directory traversal flaw in ZIP file parsing. Attackers can achieve remote code execution by tricking users into opening malicious ZIP files. Organizations using Honeywell Saia PG5 Controls Suite for building automation and control systems are affected.
💻 Affected Systems
- Honeywell Saia PG5 Controls Suite
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary code with current user privileges, potentially leading to lateral movement, data theft, or disruption of building control systems.
Likely Case
Attackers gain initial foothold on systems running the vulnerable software, enabling further exploitation and potential ransomware deployment in industrial control environments.
If Mitigated
Limited impact due to network segmentation, proper user privilege restrictions, and security controls preventing malicious file execution.
🎯 Exploit Status
Requires user interaction (opening malicious file) but exploitation is straightforward once the malicious ZIP is processed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Honeywell security advisory for specific patched version
Vendor Advisory: https://www.honeywell.com/us/en/support/security/cyber-security-notifications
Restart Required: Yes
Instructions:
1. Check Honeywell security advisory for specific patch version
2. Download and install the latest version of Saia PG5 Controls Suite
3. Restart affected systems
4. Verify installation and functionality
🔧 Temporary Workarounds
Restrict ZIP file processing
windowsBlock or restrict processing of ZIP files in the Saia PG5 Controls Suite environment
User awareness training
allTrain users to avoid opening untrusted ZIP files and to verify file sources
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Saia PG5 systems from critical networks
- Apply principle of least privilege to user accounts running the software
🔍 How to Verify
Check if Vulnerable:
Check Saia PG5 Controls Suite version against Honeywell's patched version in security advisoryCheck Version:
Check version in Saia PG5 Controls Suite application or installation directoryVerify Fix Applied:
Verify installed version matches or exceeds the patched version specified by Honeywell📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns in ZIP processing
- Unexpected process execution from Saia PG5 directory
- Failed file path validation attempts
Network Indicators:
- Unexpected outbound connections from Saia PG5 systems
- File transfers to/from Saia PG5 workstations
SIEM Query:
Process creation events from Saia PG5 executable with suspicious command-line arguments