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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3014 Advisory (icsa-21-250-02) Hitachi ABB Power Grids System Data Manager 8 September 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Hitachi ABB Power Grids System Data Manager Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Increased Privileges -- Existing Account Overwrite Arbitrary Files -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-35526 Original Bulletin: https://us-cert.cisa.gov/ics/advisories/icsa-21-250-02 - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-21-250-02) Hitachi ABB Power Grids System Data Manager Original release date: September 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 6.3 o ATTENTION: Low attack complexity o Vendor: Hitachi ABB Power Grids o Equipment: System Data Manager o Vulnerability: Cleartext Storage of Sensitive Information 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker access to sensitive information. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of System Data Manager are affected: o SDM600: All versions prior to 1.2 FP2 HF6 (Build Nr. 1.2.14002.257) 3.2 VULNERABILITY OVERVIEW 3.2.1 CLEARTEXT STORAGE OF SENSITIVE INFORMATION CWE-312 The application does not encrypt backup files. A local operating system user can modify backup files, which may allow an attacker to overwrite system configuration files and gain privileges. CVE-2021-35526 has been assigned to this vulnerability. A CVSS v3 base score of 6.3 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:L/UI:N/S:C/ 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 ABB Power Grids reported this vulnerability to CISA. 4. MITIGATIONS Hitachi ABB Power Grids recommends users apply update Version 1.2 FP2 HF6 (Build Nr. 1.2.14002.257) or newer at the earliest convenience. Users can download the latest SDM600 version from the product website . After successful upgrade, Hitachi ABB Power Grids recommends moving previously created vulnerable backups to a secure location to avoid unauthorized access. Hitachi ABB Power Grids also recommends the following general security mitigations: o Implement and continuously revise least privileges principles to minimize permissions and accesses to SDM600 related resources. o Follow security practices as defined in SDM600 security deployment guideline and firewall configurations to help protect process control networks from attacks that originate from outside the network. Such practices include that process control systems are: Physically protected from direct access by unauthorized personnel. Not directly connected to the Internet. Separated from other networks by means of a firewall system that has a minimal number of ports exposed. Not used for Internet surfing, instant messaging, or receiving e-mails. o Carefully scan portable computers and removable storage media for viruses before connecting to a control system. For additional information, see Hitachi ABB Power Grids security advisory . CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. 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 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. 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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