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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3343 Advisory (icsa-21-280-03) Johnson Controls exacqVision 8 October 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Johnson Controls exacqVision Publisher: ICS-CERT Operating System: UNIX variants (UNIX, Linux, OSX) Windows Virtualisation Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2021-27665 Original Bulletin: https://us-cert.cisa.gov/ics/advisories/icsa-21-280-03 - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-21-280-03) Johnson Controls exacqVision Original release date: October 07, 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 7.5 o ATTENTION: Exploitable remotely/low attack complexity o Vendor: Exacq Technologies, a subsidiary of Johnson Controls, Inc. o Equipment: exacqVision Server 32-bit o Vulnerability: Integer Overflow or Wraparound 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an unauthenticated remote user to exploit an integer overflow in the exacqVision Server with a specially crafted script and cause a denial-of-service condition. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Exacq Technologies' exacqVision surveillance video software products are affected: o exacqVision Server 32-bit: Versions 21.06.11.0 and prior 3.2 VULNERABILITY OVERVIEW 3.2.1 INTEGER OVERFLOW OR WRAPAROUND CWE-190 The affected product is vulnerable to an integer overflow vulnerability, which may allow an attacker to cause a denial-of-service condition. CVE-2021-27665 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/ C:N/I:N/A:H ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Ireland 3.4 RESEARCHER Tenable Research reported this vulnerability to Johnson Controls. 4. MITIGATIONS Johnson Controls recommends the following: o Upgrade exacqVision Server 32-bit to Version 21.09 or upgrade to exacqVision Server 64-bit. o Current users can obtain the critical software update from the software download location . o For more detailed mitigation instructions, please see Johnson Controls Product Security Advisory JCI-PSA-2021-18v1 o Aligning with CISA recommendations, Johnson Controls recommends taking steps to minimize risks to all building automation systems. Further ICS security notices and product security guidance are located at the Johnson Controls product security website . 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. 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. 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. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYV+hCeNLKJtyKPYoAQiEmA//VVcXqf3axHUm0iAyPKS9VSO6u247En/Q yrMXLIH9p6FwnqRQJVgbLGe9vMmAvmtV0uOv/mS322buUejV0m4dGYq/XwnkDfzR b7eQ9i/0clPQ2qnYyes29dM5ltkjSFejsRoj2kOQOQc7osarsje53OUzjmpMH+jl iS6MVm0vhTzNnYHU4FWeXs1RXywHCp6m9O0+p4Ki0Zl7rrnXKrwr3kUT0MyYFvvk 3WzO5i6ds/4uNEeVEYt5cZJslN5NVNgwiT8a8TTQF3+RyyaVnxuC7jq4vo2L8LdS gPGIrWwvCH9XVNq47FrdUJHiEXYZ7cOf40g+4DClyLaviv9Ey4LoH9RKFeGGCPeg GvwTvRzCwefeBiJZzE+XxL7eVZjonidq9E32Y4azeK5hu7sRZner49DO0E1Dr+48 6e9FVzXZPeiQbdCxPxGhr4KhraOZuj6dBVxTJeW9eYqOCyFvcc9BbfBvW2se45x4 fS5tg8QOOnseCRGRqUEhuiV5VhhStZykUMmETq4q/MkGWvG5O4+BYqm834nSsP2Q jf6IKwHHCtMZrAs+nnO3y5sL5+b6wdTeO0V0PlCUIui48gRs1jl6fhN0owpkuhAw hDPnJvL2luHxfD/lEuWmeALIzjxkseLTdJlzpKR3XGEjG5uaOAXhFxRJXZxGOqHV U63EaE1IRug= =cC4e -----END PGP SIGNATURE-----