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Breadcrumb
 1. Home
 2. News & Events
 3. Cybersecurity Advisories
 4. ICS Advisory

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ICS Advisory


INEA ME RTU

Release Date
April 20, 2023
Alert Code
ICSA-23-110-01



1. EXECUTIVE SUMMARY

 * CVSS v3 10.0
 * ATTENTION: Exploitable remotely/low attack complexity
 * Vendor: INEA
 * Equipment: ME RTU 
 * Vulnerability: OS Command Injection


2. RISK EVALUATION

Successful exploitation of this vulnerability could allow remote code
execution. 


3. TECHNICAL DETAILS


3.1 AFFECTED PRODUCTS

The following versions of ME RTU, a remote terminal unit, are affected: 

 * ME RTU: versions prior to 3.36


3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN OS COMMAND ('OS
COMMAND INJECTION') CWE-78(link is external) 

Versions of INEA ME RTU firmware prior to 3.36 are vulnerable to operating
system (OS) command injection, which could allow an attacker to remotely execute
arbitrary code. 

CVE-2023-2131 has been assigned to this vulnerability. A CVSS v3 base score of
10.0 has been calculated; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H(link is external)). 


3.3 BACKGROUND

 * CRITICAL INFRASTRUCTURE SECTORS: Energy, Water and Wastewater,
   Transportation 
 * COUNTRIES/AREAS DEPLOYED: Worldwide 
 * COMPANY HEADQUARTERS LOCATION: Slovenia 


3.4 RESEARCHER

Floris Hendriks of Radboud University reported this vulnerability to CISA. 


4. MITIGATIONS

INEA has developed mitigations for this vulnerability and recommends users
update to the latest firmware version: 

 * ME RTU: Update to version 3.36(link is external) or later. 

CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:

 * Minimize network exposure for all control system devices and/or systems, and
   ensure they are not accessible from the Internet.
 * Locate control system networks and remote devices behind firewalls and
   isolate them from business networks.
 * When remote access is required, use secure methods, such as Virtual Private
   Networks (VPNs), recognizing VPNs may have vulnerabilities and should be
   updated to the most current version available. Also recognize VPN is only as
   secure as its connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment
prior to deploying defensive measures.

CISA also provides a section for control systems security recommended
practices on the ICS webpage at cisa.gov/ics. Several CISA products detailing
cyber defense best practices are available for reading and download, including
Improving Industrial Control Systems Cybersecurity with Defense-in-Depth
Strategies.

Additional mitigation guidance and recommended practices are publicly available
on the ICS webpage at cisa.gov/ics in the technical information
paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies.

Organizations observing suspected malicious activity should follow established
internal procedures and report findings to CISA for tracking and correlation
against other incidents.

No known public exploits specifically target this vulnerability.

This product is provided subject to this Notification and this Privacy &
Use policy.


PLEASE SHARE YOUR THOUGHTS

We recently updated our anonymous product survey; we’d welcome your feedback.


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ICS Advisory | ICSA-23-171-02


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ICS Advisory | ICSA-23-171-01


ENPHASE ENVOY

Jun 15, 2023
ICS Advisory | ICSA-23-166-10


SIEMENS SIMATIC S7-1500 TM MFP BIOS

Jun 15, 2023
ICS Advisory | ICSA-23-166-13


SIEMENS SICAM A8000 DEVICES

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