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AUSCERT External Security Bulletin Redistribution
ESB-2022.2359
Advisory (icsa-22-132-01) Delta Electronics CNCSoft
13 May 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Delta Electronics CNCSoft
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Patch/Upgrade
CVE Names: CVE-2022-1405 CVE-2022-1404
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-22-132-01
Comment: CVSS (Max): 7.8 CVE-2022-1405 (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
CVSS Source: ICS-CERT
Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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ICS Advisory (ICSA-22-132-01)
Delta Electronics CNCSoft
Original release date: May 12, 2022
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
o CVSS v3 7.8
o ATTENTION: Low attack complexity
o Vendor: Delta Electronics
o Equipment: CNCSoft
o Vulnerabilities: Stack-based Buffer Overflow, Out-of-bounds Read
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow arbitrary code
execution or information disclosure.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of CNCSoft, a software management platform, are
affected:
o CNCSoft: All versions prior to 1.01.32
3.2 VULNERABILITY OVERVIEW
3.2.1 STACK-BASED BUFFER OVERFLOW CWE-121
The affected product does not properly sanitize input while processing a
specific project file, allowing a possible stack-based buffer overflow
condition.
CVE-2022-1405 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 ).
3.2.2 OUT-OF-BOUNDS READ CWE-125
The affected product does not properly sanitize input while processing a
specific project file, allowing a possible out-of-bounds read condition.
CVE-2022-1404 has been assigned to this vulnerability. A CVSS v3 base score of
3.3 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/
C:L/I:N/A:N ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Taiwan
3.4 RESEARCHER
An anonymous researcher working with Trend Micro Zero Day Initiative reported
these vulnerabilities to CISA.
4. MITIGATIONS
Delta Electronics has released an updated version of CNCSoft and recommends
users update to v1.01.32 or later .
CISA recommends users take the following measures to protect themselves from
social engineering attacks:
o Only use project files from trusted sources.
o Do not click web links or open unsolicited attachments in email messages.
o Refer to Recognizing and Avoiding Email Scams for more information on
avoiding email scams.
o Refer to Avoiding Social Engineering and Phishing Attacks for more
information on social engineering attacks.
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 on cisa.gov Several recommended 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 on cisa.gov in the Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies .
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to CISA for tracking
and correlation against other incidents.
No known public exploits specifically target these vulnerabilities. These
vulnerabilities are not exploitable remotely.
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
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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