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AUSCERT External Security Bulletin Redistribution
BLF-Tech LLC VisualView HMI
26 April 2017
AusCERT Security Bulletin Summary
Product: BLF-Tech LLC VisualView HMI
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
CVE Names: CVE-2017-6051
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BLF-Tech LLC VisualView HMI
Original release date: April 25, 2017
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CVSS v3 7.0
ATTENTION: Low skill level to exploit
Vendor: BLF-Tech LLC
Equipment: VisualView HMI
Vulnerability: Uncontrolled Search Path Element
The following VisualView HMI versions are affected:
VisualView HMI Version 22.214.171.124 and prior.
Successful exploitation of this vulnerability could allow an attacker to
execute arbitrary code within the system.
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
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.
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
Karn Ganeshen discovered this vulnerability.
Critical Infrastructure Sectors: Critical Manufacturing, Water and
Countries/Areas Deployed: United States
Company Headquarters Location: Las Vegas, Nevada
For any questions related to this report, please contact ICS-CERT at:
Toll Free: 1-877-776-7585
International Callers: (208) 526-0900
For industrial control systems security information and incident reporting:
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can help by choosing one of the links below to provide feedback about
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