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Advisory (ICSA-14-016-01)

Ecava IntegraXor Buffer Overflow Vulnerability

Original release date: January 16, 2014 | Last revised: January 17, 2014

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OVERVIEW

This advisory is a follow-up to the alert titled ICS-ALERT-14-015-01 Ecava IntegraXor Buffer Overflow Vulnerability that was published January 15, 2014, on the NCCIC/ICS-CERT Web site.

Independent researcher Luigi Auriemma identified a buffer overflow vulnerability in the Ecava IntegraXor application without coordination with NCCIC/ICS-CERT, the vendor, or any other coordinating entity known to NCCIC/ICS-CERT. Ecava has produced a patch version that mitigates this vulnerability.

This vulnerability could be exploited remotely. Exploits that target this vulnerability are known to be publicly available.

AFFECTED PRODUCTS

Ecava reports that the zero-day vulnerability affects the following versions of IntegraXor:

  • IntegraXor version 4.1.4380, and prior.

IMPACT

The successful exploit of this vulnerability may allow an attacker to crash the target 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.

BACKGROUND

Ecava Sdn Bhd is a Malaysia-based software development company that provides the IntegraXor SCADA product. Ecava specializes in factory and process automation solutions.

IntegraXor is a suite of tools used to create and run a Web-based human-machine interface for a SCADA system. IntegraXor is currently used in several areas of process control in 38 countries with the largest installation based in the United Kingdom, United States, Australia, Poland, Canada, and Estonia.

VULNERABILITY CHARACTERIZATION

VULNERABILITY OVERVIEW

STACK-BASED BUFFER OVERFLOWa

This vulnerability is exploitable by using a command to load an arbitrary resource from an arbitrary DLL located in the program’s main folder.

CVE-2014-0753b has been assigned to this vulnerability. A CVSS v2 base score of 7.8 has been assigned; the CVSS vector string is (AV:N/AC:L:Au:N/C:N/I:N/A:C).c

VULNERABILITY DETAILS

EXPLOITABILITY

This vulnerability could be exploited remotely.

EXISTENCE OF EXPLOIT

Exploits that target this vulnerability are publicly available.

DIFFICULTY

An attacker with a low skill would be able to exploit this vulnerability.

MITIGATION

Ecava Sdn Bhd has issued a customer notification that details this vulnerability and provides mitigation guidance to its customers. Ecava Sdn Bhd recommends users download and install the update, IntegraXor SCADA Server 4.1.4390, from their support Web site:

http://www.integraxor.com/download/rc.msi?4.1.4390

For additional information, please see Ecava’s vulnerability note:

http://www.integraxor.com/blog/buffer-overflow-vulnerability-note/

NCCIC/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 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 VPN is only as secure as the connected devices.

NCCIC/ICS-CERT also provides a section for control systems security recommended practices on the NCCIC/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. NCCIC/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 NCCIC/ICS-CERT Technical Information Paper, ICS-TIP-12-146-01B—Targeted Cyber Intrusion Mitigation Strategies, that is available for download from the NCCIC/ICS-CERT Web site (http://ics-cert.us-cert.gov/).

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


Contact Information

For any questions related to this report, please contact ICS-CERT at:

Email: ics-cert@hq.dhs.gov
Toll Free: 1-877-776-7585
International Callers: (208) 526-0900

For industrial control systems security information and incident reporting: http://ics-cert.us-cert.gov

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