4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
3.7 Low
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
0.001 Low
EPSS
Percentile
35.8%
Honeywell reported a denial-of-service condition caused by an improper input validation vulnerability in Honeywell’s Experion Process Knowledge System (PKS) platform. Honeywell has produced patches to mitigate this vulnerability.
This vulnerability could be exploited remotely.
The following Experion PKS versions are affected:
Successful exploitation of the vulnerability would prevent the Experion PKS client tools from uploading firmware to Series-C devices.
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.
Honeywell is a US-based company that maintains offices worldwide.
The affected product, Experion PKS, is a client tool used to configure firmware in Series-C devices. According to Honeywell, Experion PKS is deployed across several sectors including Commercial Facilities, Critical Manufacturing, Energy, Water and Wastewater Systems, and others. Honeywell estimates that this product is used primarily in the United States and Europe with a small percentage in Asia.
Experion PKS does not properly validate input. By sending a specially crafted packet, an attacker could cause the process to terminate. A successful exploit would prevent firmware uploads to the Series-C devices.
CVE-2016-8344NVD, https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-8344, 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. A CVSS v3 base score of 3.7 has been assigned; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).CVSS Calculator, https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L, web site last accessed October 27, 2016.
This vulnerability could be exploited remotely.
No known public exploits specifically target this vulnerability.
An attacker with a medium skill would be able to exploit this vulnerability.
Honeywell recommends that Experion users download and apply the appropriate patch to protect themselves from this vulnerability.
Honeywell’s software downloads to resolve the vulnerabilities include the following:
In the event that a patch is not yet available for a current Experion release, Honeywell recommends users either isolate the network traffic when using the client tools (eNAP Server service) or turn the eNAP Server service off when not uploading new firmware until a patch is available.
Users can contact Honeywell technical support for registration and installation instructions for these patches at the following URLs:
<https://www.honeywellprocess.com/en-US/support/pages/request-support.aspx>
<https://www.honeywellprocess.com/en-US/contact-us/pages/default.aspx>
ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should
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.
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4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
3.7 Low
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
0.001 Low
EPSS
Percentile
35.8%