06 June 2018
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1681 Advisory (ICSA-18-156-01) ABB IP Gateway 6 June 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: ABB IP Gateway Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Access Privileged Data -- Remote/Unauthenticated Cross-site Request Forgery -- Remote with User Interaction Unauthorised Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-7933 CVE-2017-7931 CVE-2017-7906 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-18-156-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-18-156-01) ABB IP Gateway Original release date: June 05, 2018 Legal Notice All information products included in http://ics-cert.us-cert.gov 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 http://www.us-cert.gov/tlp/. 1. EXECUTIVE SUMMARY CVSS v3 9.8 ATTENTION: Exploitable remotely/low skill level to exploit Vendor: ABB Equipment: IP Gateway Vulnerabilities: Improper Authentication, Cross-site Request Forgery, Unprotected Storage of Credentials 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow attackers to perform actions using administrative privileges. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of IP Gateway, a building management system, are affected. The IP Gateway is available under two brands; ABB and Busch-Jaeger. Busch-Jaeger Elektro GmbH is part of the ABB Group. IP Gateway Versions 3.39 and prior. 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER AUTHENTICATION CWE-287 By accessing a specific uniform resource locator (URL) on the web server, a malicious user is able to access the configuration files and application pages without authentication. CVE-2017-7931 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). 3.2.2 CROSS-SITE REQUEST FORGERY CWE-352 The web server does not sufficiently verify that a request was performed by the authenticated user, which may allow an attacker to launch a request impersonating that user. CVE-2017-7906 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). 3.2.3 UNPROTECTED STORAGE OF CREDENTIALS CWE-256 Some configuration files contain passwords stored in plain-text, which may allow an attacker to gain unauthorized access. CVE-2017-7933 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). 3.3 BACKGROUND CRITICAL INFRASTRUCTURE SECTORS: Energy COUNTRIES/AREAS DEPLOYED: Worldwide COMPANY HEADQUARTERS LOCATION: Switzerland 3.4 RESEARCHER Maxim Rupp reported these vulnerabilities to NCCIC. 4. MITIGATIONS ABB recommends users apply the update at earliest convenience. The update is available for download at the product page of the Busch-Jaeger catalogue in the Software section: (English) http://www.busch-jaeger-catalogue.com/artikel.php?bereich=1016301&programm=1016477&gruppe=1016493&produkt=1016494 (Deutsch) http://www.busch-jaeger-katalog.de/artikel.php?bereich=1016301&programm=1016477&gruppe=1016493&produkt=1016494 Users can find more information in ABB's security advisory ABB-VU-EPBP-R-2505 at the following location: http://new.abb.com/about/technology/cyber-security/alerts-and-notifications NCCIC recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should: Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet. Locate control system networks and remote devices behind firewalls, and isolate them from the business network. 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. NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. NCCIC also provides a section for control systems security recommended practices on the ICS-CERT web page. 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-CERT website 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 NCCIC for tracking and correlation against other incidents. NCCIC also recommends that users take the following measures to protect themselves from social engineering attacks: Do not click web links or open unsolicited attachments in email messages. Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. No known public exploits specifically target these vulnerabilities. Contact Information For any questions related to this report, please contact the NCCIC at: Email: NCCICCUSTOMERSERVICE@hq.dhs.gov Toll Free: 1-888-282-0870 For industrial control systems cybersecurity information: http://ics-cert.us-cert.gov or incident reporting: https://ics-cert.us-cert.gov/Report-Incident? The NCCIC 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 email@example.com 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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