CVE-2023-2570
📋 TL;DR
This vulnerability in the Foxboro.sys driver allows local attackers to cause denial-of-service or potentially execute kernel code by sending specially crafted IOCTL calls with invalid array indices. It affects systems running Schneider Electric Foxboro software with the vulnerable driver. Attackers need local user access to exploit this vulnerability.
💻 Affected Systems
- Schneider Electric Foxboro DCS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Local privilege escalation to kernel-level execution, allowing complete system compromise and persistence.
Likely Case
Local denial-of-service causing system crashes or instability in affected Foxboro systems.
If Mitigated
Limited impact with proper access controls preventing unauthorized local user access to affected systems.
🎯 Exploit Status
Requires local user access and ability to craft specific IOCTL calls with unpredictable array indices.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Schneider Electric advisory SEVD-2023-164-04 for specific patched versions.
Vendor Advisory: https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2023-164-04&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2023-164-04.pdf
Restart Required: Yes
Instructions:
1. Download patch from Schneider Electric portal. 2. Apply patch following vendor instructions. 3. Restart affected systems. 4. Verify patch installation.
🔧 Temporary Workarounds
Restrict local user access
windowsLimit local user accounts and implement least privilege access controls to reduce attack surface.
Driver access controls
windowsImplement Windows security policies to restrict access to Foxboro.sys driver.
🧯 If You Can't Patch
- Implement strict access controls to prevent unauthorized local user access to affected systems.
- Monitor for unusual IOCTL calls or system crashes related to Foxboro.sys driver.
🔍 How to Verify
Check if Vulnerable:
Check if Foxboro.sys driver is present and version matches vulnerable range from vendor advisory.Check Version:
Check driver properties in Windows Device Manager or use: driverquery | findstr FoxboroVerify Fix Applied:
Verify patch installation through vendor tools or check driver version against patched versions in advisory.📡 Detection & Monitoring
Log Indicators:
- System crashes, blue screens, or unexpected reboots
- Unusual IOCTL calls to Foxboro.sys driver
Network Indicators:
- Not applicable - local exploitation only
SIEM Query:
Windows Event ID 41 (unexpected shutdown) OR driver-related errors in System logs