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TLP:WHITE

Advisory (ICSA-17-313-01A)

AutomationDirect CLICK, C-More, C-More Micro, Do-more Designer, GS Drives, SL-Soft SOLO (Update A)

Original release date: November 09, 2017 | Last revised: March 20, 2018

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CVSS v3 6.7

Vendor: AutomationDirect

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Equipment: CLICK, C-More, C-More Micro, Do-more Designer, GS Drives, SL-Soft SOLO

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Vulnerability: Uncontrolled Search Path Element

UPDATE INFORMATION

This updated advisory is a follow-up to the original advisory titled ICSA-17-313-01 AutomationDirect CLICK, C-More, C-More Micro, GS Drives, and SL-Soft SOLO that was published November 9, 2017, on the NCCIC/ICS-CERT website.

AFFECTED PRODUCTS

The following AutomationDirect products are affected:

  • CLICK Programming Software (Part Number C0-PGMSW) versions 2.10 and prior,
  • C-More Programming Software (Part Number EA9-PGMSW)  versions 6.30 and prior,
  • C-More Micro (Part Number EA-PGMSW) versions  4.20.01.0 and prior,

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  • Do-more Designer Software (Part Number DM-PGMSW) versions 2.0.3 and prior,

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  • GS Drives Configuration Software (Part Number GSOFT) versions 4.0.6 and prior, and
  • SL-SOFT SOLO Temperature Controller Configuration Software (Part Number SL-SOFT) versions 1.1.0.5 and prior.

IMPACT

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

MITIGATION

AutomationDirect has produced fixes for the following software:

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NCCIC recommends 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.

NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

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

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

No known public exploits specifically target this vulnerability. This vulnerability is not exploitable remotely. High skill level is needed to exploit.

VULNERABILITY OVERVIEW

An uncontrolled search path element (DLL Hijacking) vulnerability has been identified. To exploit this vulnerability, an attacker could rename a malicious DLL to meet the criteria of the application, and the application would not verify that the DLL is correct. Once loaded by the application, the DLL could run malicious code at the privilege level of the application.

CVE-2017-14020 has been assigned to this vulnerability. A CVSS v3 base score of 6.7 has been assigned; the CVSS vector string is (AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H).

RESEARCHER

Mark Cross of RIoT Solutions reported this vulnerability to NCCIC.

BACKGROUND

Critical Infrastructure Sectors: Commercial Facilities, Critical Manufacturing, Information Technology

Countries/Areas Deployed: Worldwide

Company Headquarters Location: Georgia, United States


Contact Information

For any questions related to this report, please contact the NCCIC at:

Email: NCCICCUSTOMERSERVICE@hq.dhs.gov
Toll Free: 1-888-282-0870

For industrial control systems cybersecurity information:  http://ics-cert.us-cert.gov 
or incident reporting:  https://ics-cert.us-cert.gov/Report-Incident?

The NCCIC 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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