ESB-2018.1681 - [Appliance] ABB IP Gateway: Multiple vulnerabilities 2018-06-06

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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

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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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