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AUSCERT External Security Bulletin Redistribution
ICS Advisory (ICSA-20-105-01) Eaton HMiSoft VU3
15 April 2020
AusCERT Security Bulletin Summary
Product: Eaton HMiSoft VU3
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
CVE Names: CVE-2020-10639 CVE-2020-10637
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ICS Advisory (ICSA-20-105-01)
Eaton HMiSoft VU3
Original release date: April 14, 2020
All information products included in https://us-cert.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://www.us-cert.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 7.8
o ATTENTION: Low skill level to exploit
o Vendor: Eaton
o Equipment: HMiSoft VU3 (HMIVU3 runtime not impacted)
o Vulnerabilities: Stack-based Buffer Overflow, Out-of-bounds Read
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could crash the device being
accessed and may allow remote code execution or information disclosure.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of HMiSoft VU3, a HMI Operator Interface, are affected:
o HMiSoft VU3 Version 3.00.23 and prior, however, the HMIVU runtimes are not
impacted by these issues.
3.2 VULNERABILITY OVERVIEW
3.2.1 STACK-BASED BUFFER OVERFLOW CWE-121
A specially crafted input file could cause a buffer overflow when loaded by the
CVE-2020-10639 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/
3.2.2 OUT-OF-BOUNDS READ CWE-125
A specially crafted input file could trigger an out-of-bounds read when loaded
by the affected product.
CVE-2020-10637 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/
o CRITICAL INFRASTRUCTURE SECTORS: Energy
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Ireland
Natnael Samson (@NattiSamson) working with Trend Micro's Zero Day Initiative
reported these vulnerabilities to CISA.
Eaton ceased manufacturing the HMiVU on December 31, 2018, and marked the HMiVU
software as end of life. As a result, Eaton no longer provides technical
support, security fixes, or other fixes for the HMiVU software. To better serve
users and provide ongoing replacement solutions, HMiVU was replaced with the
XV100 and XV300 lines of operator interface products. It is strongly
recommended HMiVU users contact Eaton for technical support and migration
assistance to the XV solution.
NOTE: Eaton has discontinued the HMiVU product and has asked users to upgrade.
For assistance with transitioning to XV, please work directly with the
o An Eaton sales contact
o Eaton's Technical Resource Center at 1-877-ETN-CARE (386-2273), Option 2,
then Option 5
Information regarding the XV Product offering can be found via the following:
o Eaton Catalog-Volume 7, Tab 05
CISA recommends users take the following measures to protect themselves from
social engineering attacks:
o Do not open untrusted files with industrial control systems devices.
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 us-cert.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 us-cert.gov in the Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
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:
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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