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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.1873 Advisory (icsa-20-147-02) Johnson Controls Kantech EntraPass 27 May 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Kantech EntraPass Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Administrator Compromise -- Existing Account Overwrite Arbitrary Files -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2020-9046 Original Bulletin: https://www.us-cert.gov/ics/advisories/icsa-20-147-02 - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-20-147-02) Johnson Controls Kantech EntraPass Original release date: May 26, 2020 Legal Notice 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 about TLP, see https://www.us-cert.gov/tlp/ . 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 2.RISK EVALUATION 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 EntraPass software: 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/ 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 Johnson Controls recommends users upgrade all Kantech EntraPass Editions to Version 8.23 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 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. 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. 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 iQIVAwUBXs3+fuNLKJtyKPYoAQgUmg/8CsMlerjURbiPZ3GQ/mLgaKiDGbpmvPy9 s2bPNOiPYHlOjo9SPLfOVBDhuEkUdHLgPp8GABwB+6uNkt0MSu6KJ6AgvUmhj//A F1mh129AzJp7Ks9RO4cHhbhNTQb//c7V7WS9BHFdN/7IGV1VytJa5vfMDOfMsAUz obNxKqYHLpzFv5+Th7Ji1ythb/r6sS8sHXNUxVic0ZZdJ2DRIw1PwqnjE7ZjNxic 8s9HMHlR0EHytKn9x6TipdMl8YIeadR2+nKtZz6HJuTRzdP65nIXki3WR+N0uUWK fxC+UcHQszzaUirxjlKy97NyZR0HOihX2ceKPB5KJf12Qt+1lpPfDin7HBNPMvTw d2Uqwbmf3gHdwX7qHdacs2N0Yi1oUm1qZr6JStm7vlNcTCyAvKiHFat3hmNWj3l2 ULL4/3Zj9XscX4nDq5ER+Jvx5h+5Ud6goNCFEgJSBl+ePEpoNvOCaXUO3BouafoX 8wdni6cRO6mH/dnjNEFArSfAcwxff/qE17VtgMVZPElTWXH+GgWSS6s84YfIqMTT kPy0NmbgkYtaKfTYoyvm5p0THpU75qjgCR+Mnk6PRYUQM3BWqAv/79rHXkALCsNa MKYoHF9FfV5MjSbxyB242zQGBzEMrvgVytEMoF5km+ltu3B8e2/nOgstumI2qYqq 5+YMJ/yS50A= =JOp7 -----END PGP SIGNATURE-----