7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.004 Low
EPSS
Percentile
74.8%
This advisory was originally posted to the US-CERT secure Portal library on May 13, 2014, and is being released to the NCCIC/ICS-CERT web site.
Emerson has identified two authorization vulnerabilities in the Emerson DeltaV application. These vulnerabilities were reported directly to Emerson by Kirill Nesterov, Alexander Tlyapov, Dmitry Nagibin, Alexey Osipov, and Timur Yunusov of Positive Technologies. Emerson has produced a patch that mitigates these vulnerabilities.
The following Emerson DeltaV versions are affected:
An attacker that has local access to the affected product may be able to read and replace configuration files and log into accounts for which they do not have the correct authorization. A successful exploit of these vulnerabilities is likely to cause a denial of service.
Impact to individual organizations depends on many factors that are unique to each organization. ICS-CERT recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation.
Emerson is a global manufacturing and technology company offering multiple products and services in the industrial, commercial, and consumer markets through its network power, process management, industrial automation, climate technologies, and tools and storage businesses.
Emersonโs DeltaV is a general purpose process control system that is used worldwide primarily in the oil and gas and chemical industries.
A local attacker with engineering level user privileges can read and replace DeltaV configuration files in the \DeltaV directory.
CVE-2014-2349NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-2349, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. has been assigned to this vulnerability. Emerson has assigned a CVSS v2 base score of 6.2; the CVSS vector string is (AV:L/AC:L/Au:S/C:N/I:C/A:C).CVSS Calculator, http://nvd.nist.gov/cvss.cfm?version=2&vector=AV:L/AC:L/Au:S/C:N/I:C/A:C, web site last accessed May 22, 2014.
Several DeltaV service processes have diagnostic telnet ports using hardcoded credentials that can be discovered and used by an attacker.
CVE-2014-2350NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-2350, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. has been assigned to this vulnerability. Emerson has assigned CVSS v2 base score of 2.4; the CVSS vector string is (AV:L/AC:H/Au:S/C:N/I:P/A:P).CVSS Calculator, http://nvd.nist.gov/cvss.cfm?version=2&vector=AV:L/AC:H/Au:S/C:N/I:P/A:P, web site last accessed May 22, 2014.
These vulnerabilities are not exploitable remotely and cannot be exploited without user interaction.
No known public exploits specifically target these vulnerabilities.
An attacker with a low skill would be able to exploit these vulnerabilities.
Emerson has created a patch to mitigate these vulnerabilities. Emerson has distributed a notification (KBA NK-1400-0031) that provides details of the vulnerabilities, recommended mitigations, and instructions on obtaining and installing the patch. This document is available on Emersonโs support site to users who have support contracts with Emerson. If you do not have access to this site and need to apply the patch, please contact customer service at 1โ800โ833โ8314.
ICS-CERT encourages asset owners to take additional defensive measures to protect against this and other cybersecurity risks.
ICS-CERT also provides a section for control systems security recommended practices on the ICS-CERT web page at http://ics-cert.us-cert.gov/content/recommended-practices. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
Additional mitigation guidance and recommended practices are publicly available in the ICSโCERT Technical Information Paper, ICS-TIP-12-146-01BโTargeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT web site (www.ics-cert.org).
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.
In addition, ICS-CERT recommends that users take the following measures to protect themselves from social engineering attacks:
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