CVE-2023-40724
📋 TL;DR
QMS Automotive software versions before V12.39 store user credentials as plaintext in memory, allowing attackers who can perform memory dumps to extract and misuse these credentials for impersonation attacks. This affects all users of QMS Automotive software in vulnerable versions.
💻 Affected Systems
- QMS Automotive
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative credentials, compromise the entire QMS Automotive system, and potentially pivot to connected automotive systems or networks.
Likely Case
Local attackers or malware extract credentials from memory to escalate privileges within the QMS Automotive system.
If Mitigated
With proper access controls and monitoring, credential extraction would be detected before misuse occurs.
🎯 Exploit Status
Exploitation requires local access to perform memory dumps, but the technique is well-known and tools are widely available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V12.39
Vendor Advisory: https://cert-portal.siemens.com/productcert/pdf/ssa-147266.pdf
Restart Required: Yes
Instructions:
1. Download QMS Automotive V12.39 from Siemens support portal. 2. Backup current configuration and data. 3. Install the update following vendor documentation. 4. Restart the system. 5. Verify successful update.
🔧 Temporary Workarounds
Restrict Local Access
allLimit physical and remote access to systems running QMS Automotive to trusted administrators only.
Memory Protection Controls
allImplement operating system-level controls to restrict memory access and prevent unauthorized memory dumps.
🧯 If You Can't Patch
- Implement strict access controls and monitoring for all systems running QMS Automotive
- Use credential rotation policies and monitor for unusual authentication patterns
🔍 How to Verify
Check if Vulnerable:
Check QMS Automotive version in software interface or configuration files. Versions below V12.39 are vulnerable.Check Version:
Check QMS Automotive GUI or configuration files for version information (vendor-specific command varies by installation)Verify Fix Applied:
Verify version shows V12.39 or higher in software interface after update.📡 Detection & Monitoring
Log Indicators:
- Unusual memory access patterns
- Multiple failed authentication attempts followed by successful logins from new locations
- Process memory dump tools being executed
Network Indicators:
- Unexpected authentication requests from previously unused accounts
- Traffic patterns suggesting credential misuse
SIEM Query:
Process execution where (process_name contains 'procdump' OR process_name contains 'mimikatz' OR process_name contains 'dump') AND hostname contains 'qms'