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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.1037
                        BLF-Tech LLC VisualView HMI
                               26 April 2017

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           BLF-Tech LLC VisualView HMI
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-6051  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-17-115-01

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Advisory (ICSA-17-115-01)

BLF-Tech LLC VisualView HMI

Original release date: April 25, 2017

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/.

CVSS v3 7.0

ATTENTION: Low skill level to exploit

Vendor: BLF-Tech LLC

Equipment: VisualView HMI

Vulnerability: Uncontrolled Search Path Element

AFFECTED PRODUCTS

The following VisualView HMI versions are affected:

    VisualView HMI Version 9.9.14.0 and prior.

IMPACT

Successful exploitation of this vulnerability could allow an attacker to
execute arbitrary code within the system.

MITIGATION

BLF-Tech LLC has released a new version of VisualView HMI to address
the reported vulnerability. VisualView HMI Version 10.2.15.0 can be
downloaded at:

http://www.hmisys.com/downloads/VisualViewTrialInstaller.exe

NCCIC/ICS-CERT recommends that users take defensive measures to minimize
the risk of exploitation of this vulnerability. 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.

ICS-CERT reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.

ICS-CERT 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 in the ICSCERT Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies, that is available for download from the ICS-CERT web site.

Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to ICS-CERT for
tracking and correlation against other incidents.

VULNERABILITY OVERVIEW

UNCONTROLLED SEARCH PATH ELEMENT CWE-427

The uncontrolled search path element vulnerability has been identified,
which may allow an attacker to run a malicious DLL file within the search
path resulting in execution of arbitrary code.

CVE-2017-6051 has been assigned to this vulnerability. A CVSS v3
base score of 7.0 has been assigned; the CVSS vector string is
(AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).

RESEARCHER

Karn Ganeshen discovered this vulnerability.

BACKGROUND

Critical Infrastructure Sectors: Critical Manufacturing, Water and
Wastewater Systems

Countries/Areas Deployed: United States

Company Headquarters Location: Las Vegas, Nevada

Contact Information

For any questions related to this report, please contact ICS-CERT at:

Email: ics-cert@hq.dhs.gov
Toll Free: 1-877-776-7585
International Callers: (208) 526-0900

For industrial control systems security information and incident reporting:
http://ics-cert.us-cert.gov

ICS-CERT 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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