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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.4085 Advisory (icsa-20-324-01) Johnson Controls Sensormatic Electronics American Dynamics victor Web Client 18 November 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Johnson Controls Sensormatic Electronics American Dynamics Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-9049 Original Bulletin: https://us-cert.cisa.gov/ics/advisories/icsa-20-324-01 - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-20-324-01) Johnson Controls Sensormatic Electronics American Dynamics victor Web Client Original release date: November 17, 2020 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 7.1 o ATTENTION: Exploitable remotely o Vendor: Sensormatic Electronics, LLC; a subsidiary of Johnson Controls o Equipment: American Dynamics victor Web Client, Software House CoCURE Web Client o Vulnerability: Improper Authorization 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an unauthenticated attacker on the network to create and sign their own JSON web token and use it to execute an HTTP API method without the need for valid authentication/ authorization. Under certain circumstances, this could be used by an attacker to impact system availability by conducting a denial-of-service attack. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Johnson Controls reports this vulnerability affects the following products: o All versions of victor Web Client up to and including v5.6 o All versions of CoCURE Web Client up to and including v2.90 NOTE : This does not affect the new web-based CoCURE 9000 client that was introduced in CoCURE 9000 v2.90 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER AUTHORIZATION CWE-285 The software does not perform, or incorrectly performs, an authorization check when an actor attempts to access a resource or perform an action. CVE-2020-9049 has been assigned to this vulnerability. A CVSS v3 base score of 7.1 has been calculated; the CVSS vector string is ( AV:A/AC:H/PR:N/UI:N/S:U/ C:H/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 Joachim Kerschbaumer reported this vulnerability to Johnson Controls, Inc. 4. MITIGATIONS Johnson Controls advises users to maintain product installations at the latest release and provides several options for remediation of this issue. See below for details. victor Web Client: upgrade to v5.6 SP1 (victor Unified Client v5.6 SP1) CoCURE Web Client: upgrade to a minimum of v2.70 and install the relevant update below. o CoCURE Web v2.70: install the update Web Client_c2.70_5.2_Update02 o CoCURE Web v2.80: install the update Web Client_c2.80_v5.4.1_Update04 o CoCURE Web v2.90: install the update CCureWeb_2.90_Update01 For more detailed mitigation instructions, please see Johnson Controls Product Security Advisory JCI-PSA-2020-10 . Johnson Controls recommends taking steps to minimize risks to building automation systems. 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 that they are not accessible from the Internet . o Locate control system networks and remote devices behind firewalls, and isolate them from the business network. o When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize that VPN is only as secure as the 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 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. 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. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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