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AUSCERT External Security Bulletin Redistribution
Emerson DeltaV Easy Security Management Application Vulnerability
1 December 2016
AusCERT Security Bulletin Summary
Product: Emerson DeltaV
Operating System: Windows
Impact/Access: Increased Privileges -- Existing Account
CVE Names: CVE-2016-9345
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Emerson DeltaV Easy Security Management Application Vulnerability
Original release date: November 29, 2016
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Emerson has released a publication to inform its users of a vulnerability that
affects DeltaV Easy Security Management. Emerson is terminating support for
the DeltaV Easy Security Management application and highly recommends all
users uninstall it from all DeltaV and non-DeltaV workstations.
Emerson reports that the vulnerability affects the DeltaV Easy Security
Management application, which is present on the following systems:
DeltaV V12.3.1, and
Successful exploitation of this vulnerability could allow a local attacker to
elevate privileges within a DeltaV control system.
Impact to individual organizations depends on many factors that are unique to
each organization. NCCIC/ICS-CERT recommends that organizations evaluate the
impact of this vulnerability based on their operational environment,
architecture, and product implementation.
Emerson is a US-based company that maintains offices in several countries
around the world, including the US, UK, Netherlands, Italy, India, Germany,
France, Czech Republic, China, and Australia.
The affected product, DeltaV Easy Security Management, is an application
included with DeltaV systems v12.3, v12.3.1, and v13.3 that manages the
portable media ports and autorun feature for all DeltaV workstations and
servers. The DeltaV Easy Security management application allows users to
disable portable USB storage devices and autorun on workstations and servers
in the DeltaV network. According to Emerson, DeltaV is deployed across several
sectors including Chemical and Energy. Emerson estimates that this product is
IMPROPER PRIVILEGE MANAGEMENT[a]
Critical vulnerabilities may allow a local attacker to elevate privileges
within the DeltaV control system.
CVE-2016-9345[b] has been assigned to this vulnerability. A CVSS v3 base score
of 6.8 has been assigned; the CVSS vector string is
This vulnerability is not exploitable remotely and cannot be exploited without
EXISTENCE OF EXPLOIT
No known public exploits specifically target this vulnerability.
Crafting a working exploit for this vulnerability would be difficult.
The DeltaV Easy Security Management server and monitoring agents can be
manually uninstalled by users with privileges to install/uninstall Windows
applications on each given workstation or server. A more detailed procedure to
uninstall the DeltaV Easy Security application is available in the Emersons
Knowledge Base Article # NK-1600-0336 through Emersons Guardian Support
Knowledge Base. Simplified steps are as follows:
1) Log into each one of the workstations/servers running DeltaV Easy Security
and launch Windows Programs and Features.
2) Uninstall the Easy Security Server and Agent application using the
A computer reboot is not required to complete these steps. The built-in user
account created during the DeltaV Easy Security installation is also removed
during the uninstall process.
Emerson will provide additional details explaining how to manage USB ports and
autorun features using Windows Group Policies in the near future as part of
another Knowledge Base Article to be published through Emersons Guardian
Support Knowledge Base.
ICS-CERT recommends that 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.
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 ICS-CERT 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.
a. CWE-269: Improper Privilege Management,
https://cwe.mitre.org/data/definitions/269.html, web site last accessed
November 29, 2016.
b. NVD, https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-9345, NIST
uses this advisory to create the CVE web site report. This web site will be
active sometime after publication of this advisory.
c. CVSS Calculator,
web site last accessed November 29, 2016.
For any questions related to this report, please contact ICS-CERT at:
Email: email@example.com (link sends e-mail)
Toll Free: 1-877-776-7585
International Callers: (208) 526-0900
For industrial control systems security information and incident reporting:
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
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