CVE-2022-23448
📋 TL;DR
This vulnerability allows local unprivileged attackers to achieve privilege escalation in Siemens SIMATIC Energy Manager software. By exploiting improper permissions on critical directories and files, attackers can execute arbitrary code with administrator or SYSTEM privileges. All versions before V7.3 Update 1 of both Basic and PRO editions are affected.
💻 Affected Systems
- SIMATIC Energy Manager Basic
- SIMATIC Energy Manager PRO
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with NT AUTHORITY/SYSTEM privileges, allowing attackers to install malware, steal credentials, disable security controls, and maintain persistent access.
Likely Case
Local privilege escalation leading to unauthorized administrative access, data theft, and lateral movement within the network.
If Mitigated
Limited impact if proper access controls and network segmentation are implemented, though local attackers could still gain elevated privileges.
🎯 Exploit Status
Exploitation requires local access but is relatively straightforward once access is obtained. No public exploit code has been identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V7.3 Update 1
Vendor Advisory: https://cert-portal.siemens.com/productcert/pdf/ssa-655554.pdf
Restart Required: Yes
Instructions:
1. Download V7.3 Update 1 from Siemens support portal. 2. Backup current configuration. 3. Install the update following Siemens installation guide. 4. Restart the system. 5. Verify successful installation.
🔧 Temporary Workarounds
Restrict Local Access
windowsLimit local access to systems running SIMATIC Energy Manager to authorized personnel only.
Review File Permissions
windowsManually review and tighten permissions on application directories and files.
icacls "C:\Program Files\Siemens\SIMATIC Energy Manager\*" /inheritance:r /grant:r "Administrators:(OI)(CI)F" /grant:r "SYSTEM:(OI)(CI)F"
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected systems from critical network segments.
- Apply principle of least privilege to user accounts with local access to affected systems.
🔍 How to Verify
Check if Vulnerable:
Check installed version in Control Panel > Programs and Features or via Siemens management interface.Check Version:
wmic product where "name like 'SIMATIC Energy Manager%'" get name, versionVerify Fix Applied:
Verify version shows V7.3 Update 1 or later. Check that critical application directories have proper permissions set.📡 Detection & Monitoring
Log Indicators:
- Unusual process creation with elevated privileges from SIMATIC Energy Manager directories
- Failed permission modification attempts on application files
Network Indicators:
- Unusual outbound connections from SIMATIC Energy Manager systems
SIEM Query:
EventID=4688 AND (NewProcessName contains "SIMATIC Energy Manager" OR ParentProcessName contains "SIMATIC Energy Manager") AND SubjectUserName != "SYSTEM" AND SubjectUserName != "Administrator"