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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.5094 Advisory (icsa-22-286-02) Siemens Industrial Edge Management 14 October 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Siemens Industrial Edge Management Publisher: ICS-CERT Operating System: Network Appliance Resolution: Patch/Upgrade CVE Names: CVE-2022-40147 Original Bulletin: https://us-cert.cisa.gov/ics/advisories/icsa-22-286-02 Comment: CVSS (Max): 7.4 CVE-2022-40147 (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N) CVSS Source: ICS-CERT Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-22-286-02) Siemens Industrial Edge Management Original release date: October 13, 2022 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 7.4 o ATTENTION: Exploitable remotely o Vendor: Siemens o Equipment: Industrial Edge Management o Vulnerability: Improper Certificate Validation 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to inject malicious maintenance requests by exploiting improper certification validation. An attacker could exploit this vulnerability by sending statistics, activating remote support, exchanging the initial keys when onboarding, querying new extensions, or accessing sensitive data. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Industrial Edge Management, an application and device management platform, are affected: o All versions prior to V1.5.1 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER CERTIFICATE VALIDATION CWE-295 All versions of Siemens Industrial Edge Management prior to version 1.5.1 do not properly validate the server certificate when initiating a TLS connection. This could allow an attacker to spoof a trusted entity's certificate by interfering in the communication path between the client and the intended server. CVE-2022-40147 has been assigned to this vulnerability. A CVSS v3 base score of 7.4 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:N/S:U/ C:H/I:H/A:N ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Germany 3.4 RESEARCHER Siemens reported this vulnerability to CISA. 4. MITIGATIONS Siemens recommends users to update to v1.5.1 or later (login required). As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens' operational guidelines for industrial security and to follow the recommendations in the product manuals. For more information, see Siemens Security Advisory SSA-459643 in HTML or CSAF . 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 they are not accessible from the Internet . o Locate control system networks and remote devices behind firewalls and isolate them from business networks. o When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as its 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 at cisa.gov/ics . Several CISA products detailing cyber defense best 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 at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies . Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. No known public exploits specifically target this vulnerability. This vulnerability has a high attack complexity. 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBY0itCMkNZI30y1K9AQgreA//RbsqHtes1ae9MeViAR5rlOBcwPt777uo sBIhPXerXwJN1HW9luMkSKx9W7CcCiXqdop26xNAhWPVRUkf7PRe6B/VWdLLBON5 3t7eO5mkGOdfHrqriq/rYCR6OnRcwoaiv2Lbi111or+D0zEJjHv5A29MjlPF4drP zDkK6Nraij0rjiDT6M+GxiJ1CCSyhDt4MjfFmQYjO/DE7Ttd+UgLarmip/nSjxL9 /UwAuoeKwiTWOmVyiE9OTy5HvGUx/R9KW5AXCBhQD+rej/0bwsOyVSejQ8aOVvez xwEscxBLmDaDs2Qe3ZOm1CSwVxltGUNijVCzz78Pt4dQupVnsjf09Ca2J6LFMjbi Sg8k408Zp1WmO2ZkYBUks49495c02KJwE7QDSl/wgQEYl7ZYAXiaQQ/3FiH3I+4Z JodG3PBUrDNv+RcGy4t6YJrk3ar7KmkBZ9Se7g30osJb7TH5XFDgFpYXQlnkpCTq 0z85CTmscllGczY5JnUfrVbhCDDwLkHzouSGz6LGIE9HT2fJQCh8vP7zAOgncMXs 8AZw6+N8tSglpGLwHxZzBaaU8qU4v+OpSvZ1k2TcUFfW0m0mVPaOYzcdiCfZ3vHy hTEOgHhBwujFXS1F7V4IpKYSDm3xHdPK3qBbp51yOGs1DamcKCm17afS5HNYY/Mb TIaNBS6MAFM= =cxJo -----END PGP SIGNATURE-----