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TLP:WHITE

Advisory (ICSA-13-098-01)

Canary Labs Inc Trend Link Insecure ActiveX Control Method

Original release date: April 08, 2013 | Last revised: April 30, 2013

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Overview

This advisory provides mitigation details for a vulnerability in the Canary Labs, Inc. Trend Link software.

Researcher Kuang-Chun Hung of Security Research and Service Institute−Information and Communication Security Technology Center (ICST) has identified an insecure ActiveX control method vulnerability in Canary Labs, Inc. Trend Link ActiveX control. Canary Labs, Inc. has updated Trend Link, and Kuang-Chun Hung has tested the patch and verified that it mitigates the vulnerability. If exploited, an attacker could influence the paths or file names that are used in the software application. This could affect systems using Trend Link in the critical manufacturing and energy sectors in the United States, South America, and Europe.

This vulnerability could be exploited remotely.

Affected Products

Canary Lab, Inc. reports that the vulnerabilities affect the following products:

  • Trend Link Versions 9.0.2.27051 and prior.

Impact

Successful exploit of this vulnerability could result in a denial of service (DoS) or remote code execution.

Impact to individual organizations depends on many factors that are unique to each organization. ICS‑CERT recommends that organizations evaluate the impact of this vulnerability based on their operational environment, architecture, and product implementation.

Background

Canary Labs, Inc. is a US-based company that has products deployed in 24 countries, including the United States, South America, and Europe.

The affected product, Trend Link,1 is a trending application that can be used in SCADA systems. According to Canary Labs, Inc., these products are deployed across several sectors including the critical manufacturing and energy sectors.

Vulnerability Characterization

Vulnerability Overview

Insecure ActiveX Control Method2

Trend Link uses an ActiveX control that contains an insecure ActiveX control method. This control is loaded from “TrendDisplay.dll,” and contains a method called “SaveToFile” that allows users to save arbitrary files to any location on the server hosting the control. This vulnerability could result in a DoS or allow remote code execution.

CVE-2012-30223 has been assigned to this vulnerability. A CVSS v2 base score of 7.9 has been assigned; the CVSS vector string is (AV:N/AC:M/Au:S/C:N/I:C/A:C).4

Vulnerability Details

Exploitability

This vulnerability can be exploited remotely.

Existence of Exploit

No known public exploits specifically target this vulnerability.

Difficulty

An attacker with medium skill could exploit this vulnerability.

Mitigation

Canary Labs, Inc. has published a customer notification concerning this vulnerability.  Trend Link customers who wish to obtain the update and instructions on how to apply it should contact Canary Labs product support:

Canary Labs Product Support5
814-793-3770
support@canarylabs.com

ICS‑CERT encourages asset owners to take additional defensive measures to protect against this and other cybersecurity risks.

  • Minimize network exposure for all control system devices. Critical devices should not directly face 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 VPN is only as secure as the connected devices.

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.6 ICS‑CERT reminds organizations to perform proper impact analysis and risk assessment prior to taking defensive measures.

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.7

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.


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?

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