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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.2984 Advisory (icsa-21-245-01) Johnson Controls Sensormatic Electronics Illustra 3 September 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Johnson Controls Sensormatic Electronics Illustra Publisher: ICS-CERT Operating System: Linux variants Impact/Access: Root Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-3156 Reference: ESB-2021.2342 ESB-2021.1330 Original Bulletin: https://us-cert.cisa.gov/ics/advisories/icsa-21-245-01 - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-21-245-01) Johnson Controls Sensormatic Electronics Illustra Original release date: September 02, 2021 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: Sensormatic Electronics, LLC, a subsidiary of Johnson Controls, Inc. o Equipment: Illustra o Vulnerability: Off-by-one Error 2. RISK EVALUATION Successful exploitation of this vulnerability could allow a local attacker to obtain super user access to the underlying Linux operating system. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Johnson Controls reports this vulnerability affects the following Sensormatic Electronics Illustra camera systems: o Pro Gen 3, All versions prior to 2.8.0 o Flex Gen 2, All versions prior to 1.9.4 o Pro 2, All versions o Insight, All versions prior to 1.4.0 3.2 VULNERABILITY OVERVIEW 3.2.1 OFF-BY-ONE ERROR CWE-193 Under specific circumstances, a local attacker could exploit this vulnerability to obtain super user access to the underlying Linux operating system. CVE-2021-3156 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:L/UI:N/S:U/ C:H/I:H/A:H ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Ireland 3.4 RESEARCHER Johnson Controls reported this vulnerability to CISA. 4. MITIGATIONS Users are recommended update to one of the following firmware versions: o Pro Gen 3, upgrade to Version 2.8.0 o Flex Gen 2, upgrade to Version 1.9.4 o Pro 2 is EOL o Insight, upgrade to Version 1.4.0 For more detailed mitigation instructions, please see Johnson Controls Product Security Advisory JCI-PSA-2021-13 Johnson Controls recommends taking steps to minimize risks to all building automation systems. CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should: o Ensure the least-privilege user principle is followed. o Restrict physical access to the device to authorized personnel only. 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.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 us-cert.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 this vulnerability. This vulnerability is 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. 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