CVE-2020-9026
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary operating system commands on affected ELTEX networking devices via command injection in the PING field. Attackers can gain full control of the device, potentially compromising the entire network. Affected devices include ELTEX NTP-RG-1402G and NTP-2 models.
💻 Affected Systems
- ELTEX NTP-RG-1402G
- ELTEX NTP-2
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to network compromise, data exfiltration, lateral movement to other systems, and persistent backdoor installation.
Likely Case
Unauthorized access to device configuration, network traffic interception, denial of service, and credential harvesting.
If Mitigated
Limited impact if devices are behind firewalls with strict ingress filtering and network segmentation.
🎯 Exploit Status
Exploitation requires network access to the device's web interface. The vulnerability is in a publicly accessible resource without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not publicly available
Restart Required: No
Instructions:
Check with ELTEX vendor for firmware updates. No official patch information is publicly documented.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to device management interfaces using firewall rules
Disable Web Interface
allDisable the web management interface if not required for operation
🧯 If You Can't Patch
- Segment affected devices into isolated network zones with strict firewall rules
- Implement network monitoring and intrusion detection for suspicious ping.cmd requests
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or CLI. If running NTP-RG-1402G firmware 1v10 3.25.3.32 or earlier, assume vulnerable.Check Version:
Check via web interface or device CLI (vendor-specific commands)Verify Fix Applied:
Verify firmware has been updated to a version not listed as affected. Test with controlled command injection attempts.📡 Detection & Monitoring
Log Indicators:
- Unusual ping.cmd requests with shell metacharacters
- Unexpected command execution in system logs
Network Indicators:
- HTTP requests to ping.cmd with suspicious parameters
- Outbound connections from device to unexpected destinations
SIEM Query:
http.url:*ping.cmd* AND (http.param:*;* OR http.param:*|* OR http.param:*`*)