CVE-2020-11542
📋 TL;DR
This vulnerability allows complete authentication bypass on 3xLOGIC Infinias eIDC32 physical access control devices by manipulating the CMD.HTM endpoint. Attackers can gain administrative access to door control systems without valid credentials. Organizations using these specific devices with vulnerable firmware are affected.
💻 Affected Systems
- 3xLOGIC Infinias eIDC32
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full administrative control over physical access systems, allowing them to unlock doors, disable alarms, manipulate access logs, and potentially compromise connected systems.
Likely Case
Unauthorized individuals gain physical access to restricted areas by bypassing door controls, potentially leading to theft, sabotage, or unauthorized entry.
If Mitigated
With proper network segmentation and monitoring, impact is limited to isolated physical access systems with no lateral movement to IT networks.
🎯 Exploit Status
Exploitation requires only web access to the device and manipulation of the CMD parameter. No authentication or special tools needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not publicly available
Restart Required: No
Instructions:
No official patch available. Contact 3xLOGIC for firmware updates or replacement options.
🔧 Temporary Workarounds
Network Isolation
allRemove vulnerable devices from internet-facing networks and place behind firewalls with strict access controls.
Disable Web Interface
allDisable the web management interface if not required for operations.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate eIDC32 devices from other networks
- Deploy network monitoring and intrusion detection specifically for these devices
🔍 How to Verify
Check if Vulnerable:
Access device web interface and attempt to navigate to CMD.HTM?CMD= with various parameters. If authentication is bypassed, device is vulnerable.Check Version:
Check device web interface or physical label for firmware version informationVerify Fix Applied:
Test authentication bypass attempts after implementing workarounds to ensure they fail.📡 Detection & Monitoring
Log Indicators:
- Unusual access patterns to CMD.HTM endpoint
- Authentication bypass attempts
- Multiple failed login attempts followed by successful access
Network Indicators:
- HTTP requests to CMD.HTM with CMD parameter manipulation
- Traffic to eIDC32 devices from unexpected sources
SIEM Query:
source_ip="eIDC32_device" AND (url="*CMD.HTM*" OR url="*CMD=*")