CVE-2024-38876
📋 TL;DR
This vulnerability allows local authenticated attackers to execute arbitrary code with elevated privileges on Siemens Omnivise T3000 systems. The affected application executes user-modifiable code as a privileged user, enabling privilege escalation. This impacts various Omnivise T3000 components including Application Server, Domain Controller, and Terminal Server.
💻 Affected Systems
- Omnivise T3000 Application Server
- Omnivise T3000 Domain Controller
- Omnivise T3000 Product Data Management (PDM)
- Omnivise T3000 Terminal Server
- Omnivise T3000 Thin Client
- Omnivise T3000 Whitelisting Server
📦 What is this software?
Omnivise T3000 Application Server by Siemens
Omnivise T3000 Domain Controller by Siemens
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with administrative privileges, allowing attackers to install persistent malware, exfiltrate sensitive industrial control data, disrupt operations, or pivot to other systems.
Likely Case
Local privilege escalation leading to unauthorized access to sensitive system functions, configuration changes, or data theft by malicious insiders or compromised accounts.
If Mitigated
Limited impact if proper access controls, least privilege principles, and network segmentation are implemented, though the vulnerability still exists.
🎯 Exploit Status
Exploitation requires local authenticated access but appears straightforward once access is obtained. No public exploit code has been identified at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Contact Siemens for specific patch information
Vendor Advisory: https://cert-portal.siemens.com/productcert/html/ssa-857368.html
Restart Required: Yes
Instructions:
1. Review Siemens advisory SSA-857368
2. Contact Siemens support for specific patches
3. Apply patches to all affected Omnivise T3000 components
4. Restart systems as required
5. Verify patch application
🔧 Temporary Workarounds
Restrict Local Access
allLimit local authenticated access to only essential personnel and implement strict access controls
Implement Least Privilege
windowsEnsure users only have necessary privileges and cannot modify application code or configuration files
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Omnivise T3000 systems from other critical infrastructure
- Enhance monitoring and logging of privileged account activity and file modifications on affected systems
🔍 How to Verify
Check if Vulnerable:
Check system version against affected versions list and review Siemens advisory for specific indicatorsCheck Version:
Check through Siemens Omnivise management interface or contact Siemens support for version verificationVerify Fix Applied:
Verify patch installation through Siemens management tools and confirm version is no longer in affected range📡 Detection & Monitoring
Log Indicators:
- Unusual privileged process execution
- Modifications to application code or configuration files by non-administrative users
- Failed privilege escalation attempts
Network Indicators:
- Unusual outbound connections from Omnivise systems
- Lateral movement attempts from Omnivise systems
SIEM Query:
Process execution where parent process is Omnivise T3000 component and user is non-privileged but process runs with elevated privileges