CVE-2023-49617
📋 TL;DR
The MachineSense API lacks authentication controls, allowing remote attackers to access and modify sensitive information without credentials. This affects all systems running vulnerable MachineSense software with exposed APIs.
💻 Affected Systems
- MachineSense API
📦 What is this software?
Feverwarn Firmware by Machinesense
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of connected industrial control systems, unauthorized control of machinery, data theft, and potential physical damage to industrial processes.
Likely Case
Unauthorized access to sensitive operational data, configuration tampering, and potential disruption of monitoring systems.
If Mitigated
Limited impact if API is isolated behind network segmentation and access controls, though vulnerability remains present.
🎯 Exploit Status
No authentication required makes exploitation trivial for anyone with network access to the API.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown from provided references - check vendor advisory
Vendor Advisory: https://machinesense.com/pages/about-machinesense
Restart Required: Yes
Instructions:
1. Contact MachineSense vendor for patched version. 2. Apply vendor-provided update. 3. Restart affected systems. 4. Verify authentication is now required for API access.
🔧 Temporary Workarounds
Network Segmentation
allIsolate MachineSense API behind firewall with strict access controls
API Gateway with Authentication
allPlace reverse proxy with authentication in front of vulnerable API
🧯 If You Can't Patch
- Implement strict network segmentation to isolate MachineSense systems from untrusted networks
- Deploy web application firewall with authentication requirements for API endpoints
🔍 How to Verify
Check if Vulnerable:
Attempt to access MachineSense API endpoints without authentication - if successful, system is vulnerable.Check Version:
Check MachineSense documentation or contact vendor for version verification method.Verify Fix Applied:
Verify authentication is now required for all API endpoints and test with invalid credentials.📡 Detection & Monitoring
Log Indicators:
- Unauthenticated API access attempts
- Unusual API request patterns
- Configuration changes via API
Network Indicators:
- Direct API calls without authentication headers
- Unusual traffic to MachineSense API ports
SIEM Query:
source_ip=* AND destination_port=(MachineSense_API_port) AND NOT authentication_header=*