CVE-2023-51593
📋 TL;DR
This vulnerability allows unauthenticated remote attackers to execute arbitrary code on Voltronic Power ViewPower Pro systems by exploiting expression language injection in the Struts2 dependency. Affected installations can be compromised without any authentication, potentially giving attackers full control over the system. The vulnerability affects systems running vulnerable versions of ViewPower Pro software.
💻 Affected Systems
- Voltronic Power ViewPower Pro
📦 What is this software?
Viewpower by Voltronicpower
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with remote code execution as LOCAL SERVICE, allowing attackers to install malware, steal data, pivot to other systems, or disrupt power monitoring operations.
Likely Case
Remote code execution leading to system compromise, data theft, and potential ransomware deployment on vulnerable power monitoring systems.
If Mitigated
Limited impact if properly segmented and monitored, but still represents a critical security flaw that should be patched immediately.
🎯 Exploit Status
ZDI-CAN-22095 identifier suggests proof-of-concept exists. Struts2 vulnerabilities are commonly weaponized quickly.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check with Voltronic Power for specific patched version
Vendor Advisory: Not publicly available at time of analysis
Restart Required: Yes
Instructions:
1. Contact Voltronic Power for security advisory and patches. 2. Apply vendor-provided patch. 3. Restart ViewPower Pro services. 4. Verify patch application.
🔧 Temporary Workarounds
Network Segmentation
allIsolate ViewPower Pro systems from untrusted networks and internet access
Access Control Lists
allImplement strict firewall rules to limit access to ViewPower Pro services
🧯 If You Can't Patch
- Immediately isolate affected systems from network access
- Implement application-level WAF rules to block Struts2 expression language injection patterns
🔍 How to Verify
Check if Vulnerable:
Check ViewPower Pro version and Struts2 dependency version. Contact Voltronic Power for vulnerability assessment.Check Version:
Check ViewPower Pro application version through administrative interface or system informationVerify Fix Applied:
Verify patch application through vendor-provided verification method and test that expression language injection is no longer possible.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests containing OGNL/Struts2 expressions
- Unexpected process execution from ViewPower Pro service
- Authentication bypass attempts
Network Indicators:
- HTTP requests with suspicious OGNL payloads to ViewPower Pro endpoints
- Unusual outbound connections from ViewPower Pro system
SIEM Query:
source="ViewPower Pro" AND (http_uri="*%24%7B*" OR http_uri="*%23*" OR http_uri="*ognl*")