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AUSCERT External Security Bulletin Redistribution
Advisory (icsa-20-147-02) Johnson Controls Kantech EntraPass
27 May 2020
AusCERT Security Bulletin Summary
Product: Kantech EntraPass
Operating System: Network Appliance
Impact/Access: Administrator Compromise -- Existing Account
Overwrite Arbitrary Files -- Existing Account
CVE Names: CVE-2020-9046
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ICS Advisory (ICSA-20-147-02)
Johnson Controls Kantech EntraPass
Original release date: May 26, 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
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1. EXECUTIVE SUMMARY
o CVSS v3 8.8
o ATTENTION: low skill level to exploit
o Vendor: Kantech, a subsidiary of Johnson Controls
o Equipment: EntraPass
o Vulnerability: Improper Access Control
Successful exploitation of this vulnerability could potentially allow an
authorized low-privileged user to gain full system-level privileges.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
Johnson Controls reports the vulnerability affects the following Kantech
o Special Edition: All versions up to and including v8.22
o Corporate Edition: All versions up to and including v8.22
o Global Edition: All versions up to and including v8.22
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER ACCESS CONTROL CWE-284
There is a vulnerability in Kantech EntraPass that could allow an authorized
low-privileged user to gain full system-level privileges by replacing critical
files with specifically crafted files.
CVE-2020-9046 has been assigned to this vulnerability. A CVSS v3 base score of
8.8 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:L/UI:N/S:C/
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Ireland
Johnson Controls reported this vulnerability to CISA.
Johnson Controls recommends users upgrade all Kantech EntraPass Editions to
For more detailed mitigation instructions, please see Johnson Controls Product
Security Advisory JCI-PSA-2020-6 v1
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:
o Exercise principles of least privilege.
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.
CISA also recommends users take the following measures to protect themselves
from social engineering attacks:
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.
No known public exploits specifically target this vulnerability. This
vulnerability is 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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