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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.0617 Advisory (icsa-21-049-01) Johnson Controls Metasys Reporting Engine (MRE) Web Services 19 February 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Engine (MRE) Web Services Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-9050 Original Bulletin: https://us-cert.cisa.gov/ics/advisories/icsa-21-049-01 - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-21-049-01) Johnson Controls Metasys Reporting Engine (MRE) Web Services Original release date: February 18, 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 skill level to exploit o Vendor: Johnson Controls o Equipment: Metasys Reporting Engine (MRE) Web Services o Vulnerability: Path Traversal 2. RISK EVALUATION Successful exploitation of this vulnerability could allow a remote unauthenticated attacker to access and download arbitrary files from the system. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Johnson Controls reports the vulnerability affects the following versions of Metasys Reporting Engine (MRE) Web Services: o MRE - v2.0 o MRE - v2.1 3.2 VULNERABILITY OVERVIEW 3.2.1 PATH TRAVERSAL CWE-22 Metasys Reporting Engine (MRE) Web Services does not properly sanitize pathname elements that can resolve to a location that is outside of the restricted directory. CVE-2020-9050 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:H/I:N/A:N ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Ireland 3.4 RESEARCHER TIM Security Red Team Research reported this vulnerability to Johnson Controls, Inc. 4. MITIGATIONS Johnson Controls recommends users upgrade to MRE v2.2 or later. Users with licenses for MRE should contact their local branch office for remediation. For more detailed mitigation instructions, please see Johnson Controls Product Security Advisory JCI-PSA-2021-02 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. 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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