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AUSCERT External Security Bulletin Redistribution
ESB-2018.1681
Advisory (ICSA-18-156-01) ABB IP Gateway
6 June 2018
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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
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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.
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