CVE-2023-24550
📋 TL;DR
A heap-based buffer overflow vulnerability in Solid Edge allows attackers to execute arbitrary code by tricking users into opening malicious PAR files. This affects Solid Edge SE2022 and SE2023 users who haven't applied security updates. The vulnerability enables remote code execution within the current process context.
💻 Affected Systems
- Solid Edge SE2022
- Solid Edge SE2023
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through remote code execution, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation or malware execution when users open malicious PAR files, potentially leading to credential theft or data exfiltration.
If Mitigated
Limited impact with proper application whitelisting and user training preventing execution of malicious files.
🎯 Exploit Status
Exploitation requires user interaction to open malicious PAR files; no public exploit code available at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: SE2022: V222.0MP12 or later, SE2023: V223.0Update2 or later
Vendor Advisory: https://cert-portal.siemens.com/productcert/pdf/ssa-491245.pdf
Restart Required: Yes
Instructions:
1. Download latest Solid Edge updates from Siemens support portal. 2. Install updates following vendor instructions. 3. Restart affected systems. 4. Verify version is patched.
🔧 Temporary Workarounds
Block PAR file extensions
windowsPrevent execution of PAR files via group policy or application control
Group Policy: Computer Configuration > Policies > Windows Settings > Security Settings > Software Restriction Policies > Additional Rules > New Path Rule: *.PAR = Disallowed
User awareness training
allTrain users not to open PAR files from untrusted sources
🧯 If You Can't Patch
- Implement application whitelisting to block Solid Edge execution
- Network segmentation to isolate Solid Edge workstations
🔍 How to Verify
Check if Vulnerable:
Check Solid Edge version via Help > About Solid EdgeCheck Version:
In Solid Edge: Help > About Solid EdgeVerify Fix Applied:
Verify version is SE2022 V222.0MP12+ or SE2023 V223.0Update2+📡 Detection & Monitoring
Log Indicators:
- Solid Edge crash logs with heap corruption errors
- Windows Application logs showing Solid Edge crashes
Network Indicators:
- Unexpected PAR file downloads to engineering workstations
- Outbound connections from Solid Edge to unknown IPs
SIEM Query:
source="Windows Security" EventID=4688 ProcessName="*SolidEdge*.exe" CommandLine="*.PAR"