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 * Industrial Control Systems

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 1. ICS-CERT Advisories    >
 2. Delta Electronics CNCSoft ScreenEditor

More ICS-CERT Advisories


ICS ADVISORY (ICSA-23-026-01)


DELTA ELECTRONICS CNCSOFT SCREENEDITOR

Original release date: January 26, 2023



LEGAL NOTICE

All information products included in https://us-cert.cisa.gov/ics are
provided "as is" for informational purposes only. The Department of Homeland
Security (DHS) does not provide any warranties of any kind regarding any
information contained within. DHS does not endorse any commercial product or
service, referenced in this product or otherwise. Further dissemination of this
product is governed by the Traffic Light Protocol (TLP) marking in the header.
For more information about TLP, see https://us-cert.cisa.gov/tlp/.

--------------------------------------------------------------------------------

 


1. EXECUTIVE SUMMARY

 * CVSS v3 7.8
 * ATTENTION: Low attack complexity 
 * Vendor: Delta Electronics 
 * Equipment: CNCSoft  
 * Vulnerability: Stack-based Buffer Overflow 


2. RISK EVALUATION

Successful exploitation of this vulnerability could cause a buffer overflow
condition, which could allow remote code execution. 


3. TECHNICAL DETAILS


3.1 AFFECTED PRODUCTS

The following versions of CNCSoft, a software management platform, are
affected: 

 * CNCSoft: All versions prior to v1.01.34 
 * Running ScreenEditor: All versions 1.01.5 and prior 


3.2 VULNERABILITY OVERVIEW

3.2.1 STACK-BASED BUFFER OVERFLOW CWE-121 

All versions prior to Delta Electronic’s CNCSoft version 1.01.34 (running
ScreenEditor versions 1.01.5 and prior) are vulnerable to a stack-based buffer
overflow, which could allow an attacker to remotely execute arbitrary code. 

CVE-2022-4634 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been calculated; the CVSS vector string is
(AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). 


3.3 BACKGROUND

 * CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing 
 * COUNTRIES/AREAS DEPLOYED: Worldwide 
 * COMPANY HEADQUARTERS LOCATION: Taiwan 


3.4 RESEARCHER

Simon Humbert, working with Trend Micro Zero Day Initiative, reported this
vulnerability to CISA. 


4. MITIGATIONS

Delta Electronics released an updated version of CNCSoft and recommends users
update to v1.01.34 or later(link is external). 

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
vulnerability is not exploitable remotely. 



CONTACT INFORMATION

For any questions related to this report, please contact the CISA at:

Email: CISAservicedesk@cisa.dhs.gov(link sends email)
Toll Free: 1-888-282-0870

For industrial control systems cybersecurity information: 
https://us-cert.cisa.gov/ics 
or incident reporting:  https://us-cert.cisa.gov/report

CISA continuously strives to improve its products and services. You can help by
choosing one of the links below to provide feedback about this product.

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policy.

Please share your thoughts.

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


CONTACT US

(888)282-0870

Send us email(link sends email)

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www.cisa.gov Open in urlscan Pro
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