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AUSCERT External Security Bulletin Redistribution
ESB-2023.3890
ICS Advisory | ICSA-23-192-02 Sensormatic Electronics iSTAR
12 July 2023
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AusCERT Security Bulletin Summary
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Product: Sensormatic Electronics iSTAR
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Patch/Upgrade
CVE Names: CVE-2023-3127
Original Bulletin:
https://www.cisa.gov/news-events/ics-advisories/icsa-23-192-02
Comment: CVSS (Max): 7.5 CVE-2023-3127 (CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L)
CVSS Source: ICS-CERT
Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L
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ICS Advisory (ICSA-23-192-02)
Sensormatic Electronics iSTAR
Release Date
July 11, 2023
1. EXECUTIVE SUMMARY
o CVSS v3 7.5
o ATTENTION: Exploitable via adjacent network/Low attack complexity
o Vendor: Sensormatic Electronics, LLC, a subsidiary of Johnson Controls Inc.
o Equipment: iSTAR
o Vulnerability: Improper Authentication
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an unauthenticated
user to login to iSTAR devices with administrator rights.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
Johnson Controls reports this vulnerability affects the following versions of
Sensormatic Electronics iSTAR products:
o iSTAR Ultra and iSTAR Ultra LT: Firmware after version 6.8.6 and prior to
6.9.2 CU01
o iSTAR Ultra G2 and iSTAR Edge G2: Firmware versions prior to 6.9.2 CU01
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER AUTHENTICATION CWE-287
In Sensormatic Electronics iSTAR devices, an unauthenticated user could login
with administrator rights.
CVE-2023-3127 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been calculated; the CVSS vector string is ( AV:A/AC:H/PR:N/UI:N/S:C/
C:L/I:H/A:L ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Ireland
3.4 RESEARCHER
Johnson Controls, Inc reported this vulnerability to CISA.
4. MITIGATIONS
Johnson Controls recommends that users upgrade Sensormatic Electronics iSTAR
Ultra, iSTAR Ultra LT, iSTAR Ultra G2, and iSTAR Edge G2 firmware to version
6.9.2 CUO1.
o Upgrade iSTAR Ultra, iSTAR Ultra LT, iSTAR Ultra G2, and iSTAR Edge G2
firmware to version 6.9.2 CU01.
o For more detailed mitigation instructions, please see Johnson Controls
Product Security Advisory JCI-PSA-2023-05 .
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:
o Minimize network exposure for all control system devices and/or systems,
and ensure they are not accessible from the Internet .
o Locate control system networks and remote devices behind firewalls and
isolate them from business networks.
o 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 has a high attack complexity.
This product is provided subject to this Notification and this Privacy & Use
policy.
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