CVE-2023-24560

7.8 HIGH

📋 TL;DR

This vulnerability in Solid Edge allows attackers to execute arbitrary code by exploiting an out-of-bounds write when parsing malicious PAR files. Users of Solid Edge SE2022 and SE2023 are affected if they haven't applied the latest patches. The attack requires user interaction to open a specially crafted file.

💻 Affected Systems

Products:
  • Solid Edge SE2022
  • Solid Edge SE2023
Versions: SE2022: All versions before V222.0MP12; SE2023: All versions before V223.0Update2
Operating Systems: Windows
Default Config Vulnerable: ⚠️ Yes
Notes: All installations of affected versions are vulnerable when processing PAR files.

📦 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 application crash when a user opens a malicious PAR file, potentially leading to malware installation.

🟢

If Mitigated

Application crash without code execution if exploit fails or security controls block the attack.

🌐 Internet-Facing: LOW - Requires user interaction with malicious file, not directly exploitable over network.
🏢 Internal Only: MEDIUM - Internal users could be tricked into opening malicious files via email or file shares.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires user interaction to open malicious PAR file. No public exploits known 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 update from Siemens support portal. 2. Run installer with administrative privileges. 3. Restart system after installation completes.

🔧 Temporary Workarounds

Block PAR file extensions

windows

Prevent Solid Edge from opening PAR files via file association blocking.

reg add "HKLM\SOFTWARE\Classes\.par" /v "Content Type" /t REG_SZ /d "application/octet-stream" /f
reg add "HKLM\SOFTWARE\Classes\SolidEdge.PartDocument\shell\open\command" /ve /t REG_SZ /d "" /f

🧯 If You Can't Patch

  • Implement application whitelisting to prevent unauthorized Solid Edge execution
  • Educate users to never open PAR files from untrusted sources

🔍 How to Verify

Check if Vulnerable:

Check Solid Edge version in Help > About. If SE2022 version is below V222.0MP12 or SE2023 version is below V223.0Update2, system is vulnerable.

Check Version:

wmic product where "name like 'Solid Edge%'" get version

Verify Fix Applied:

Verify Solid Edge version shows V222.0MP12 or higher for SE2022, or V223.0Update2 or higher for SE2023.

📡 Detection & Monitoring

Log Indicators:

  • Solid Edge crash logs with memory access violations
  • Windows Application Event Logs with Faulting Module: SEECAD.dll

Network Indicators:

  • Unusual outbound connections after Solid Edge processes PAR files

SIEM Query:

EventID=1000 AND SourceName='Application Error' AND FaultingModuleName='SEECAD.dll'

🔗 References

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