05 October 2022
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.4946 Advisory (icsa-22-277-02) Hitachi Energy Modular Switchgear Monitoring (MSM) 5 October 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Hitachi Energy Modular Switchgear Monitoring (MSM) Publisher: ICS-CERT Operating System: Network Appliance Resolution: Mitigation CVE Names: CVE-2021-40336 CVE-2021-40335 Original Bulletin: https://us-cert.cisa.gov/ics/advisories/icsa-22-277-02 Comment: CVSS (Max): 5.0 CVE-2021-40336 (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L) CVSS Source: ICS-CERT Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-22-277-02) Hitachi Energy Modular Switchgear Monitoring (MSM) Original release date: October 04, 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 5.0 o ATTENTION: Exploitable remotely o Vendor: Hitachi Energy o Equipment: Modular Switchgear Monitoring (MSM) o Vulnerabilities: Cross-Site Request Forgery (CSRF), HTTP Response Splitting 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to perform malicious command injection, trick a valid user into downloading malicious software onto their computer. Successful exploitation may also allow an attacker to pose as a legitimate user. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of MSM, a monitoring system for high voltage switchgear, are affected: o MSM version 2.2 and prior 3.2 VULNERABILITY OVERVIEW 3.2.1 CROSS-SITE REQUEST FORGERY CWE-352 The affected product is vulnerable to cross site request forgery (CSRF), which if exploited could lead an attacker to gain unauthorized access to the web application and perform an unauthorized action without the knowledge of the legitimate user. CVE-2021-40335 has been assigned to this vulnerability. A CVSS v3 base score of 5.0 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:NRS:U/ C:L/I:L/A:L ). 3.2.2 IMPROPER NEUTRALIZATION OF CRLF SEQUENCES IN HTTP HEADERS ('HTTP REQUEST/ RESPONSE SPLITTING') CWE-113 The affected product is vulnerable to HTTP response splitting, which if exploited, could lead an attacker to inject harmful code into the user's web browser for purposes such as stealing session cookies. CVE-2021-40336 has been assigned to this vulnerability. A CVSS v3 base score of 5.0 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:R/S:U/ C:L/I:L/A:L ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Energy o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Switzerland 3.4 RESEARCHER Hitachi Energy reported these vulnerabilities to CISA. 4. MITIGATIONS Hitachi Energy recommends security practices and firewall configurations to help protect a network from attacks originating outside the network: o Physically protect process control systems from unauthorized direct access. o Ensure process control systems have no direct connections to the internet. o Use firewall systems to separate process control systems from other networks. o Ensure the firewall system only has necessary ports exposed. MSM should only be used to access the internet for authorized information. Portable computers and removable storage media should be carefully scanned for viruses before connecting to a network. Links used for access to an MSM system should not be sent by email; links to MSM should not be opened. Suspicious emails should be reported to the IT administrator. For more information, see Hitachi Energy advisory 8DBD000T085 . CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability these vulnerabilities. Specifically, users should: 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. CISA also recommends users take the following measures to protect themselves from social engineering attacks: o Do not click web links or open attachments in unsolicited 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 these vulnerabilities. These vulnerabilities have 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: email@example.com 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/ iQIVAwUBYz17DMkNZI30y1K9AQiExA/+LNjkKAYLPiQSeWuSvAxBdvhnAaSd7KQ5 2pHcsuqElJsuNQNVzjXadTpVG5Ed33OUL0YEwBfFFPU+jp1rsoJciV9192XyXQVe qCWHp0pkUpjHN8SkEWSj14lSOMQWYCwvOjt4WOud/+okv0PdIP1IrDUHLDKoMA8W rrN/3SBhydZHLtdmAWZN9gGO35aq2oBshcXe/QlkIxvNOjBBH5r5eSCvoHXgASTp qOezN9FanoDk98b9U2aDyUbcCneuhRGW4NxCqFDMIEiYeW7rC/72yzpne8lbK9DP k6MTbkYyBXUuM+Dl5tmFE9JwA4lNKpag0gODdLRPiYlpq04P1F+4OYSCZ1dBXMYy 1ANw+QNcmjgngGd95k/3uO60rAu13ky1Cxw6Gqs7AfyTkgsiDvnDAJN9+1FFHfuW epdy6MkhZm8hiYV6X8rEKX+zX9adg6HxPm6u9yi0ngJK5KXcCHCeRL9BCOR3SASa eFAM7r0PqgOV+L1+EcqZso58JclNg643/gUTT+EsERtfbBYBbjJ/Kln/Vr6LXEqV WusjtGb9qYYxvfdBFJd2ireS6+RC4NUpPnUS3onouy8nSC5HiZ56S8P939B6Z5is 5ahmYc9NssxiOBrOOfnuG92RqGkjR8sqjO3+MvBo3E1S5peigjtKmQPfUQOPnUJ+ SnF8IYGG7zw= =Q5zK -----END PGP SIGNATURE-----