U.S. Flag Official website of the Department of Homeland Security
U.S. Department of Homeland Security Seal. ICS-CERT. Industrial Control Systems Cyber Emergency Response Team.
TLP:WHITE

Advisory (ICSA-13-036-02)

Ecava IntegraXor ActiveX Buffer Overflow

Original release date: February 04, 2013 | Last revised: January 29, 2015

Legal Notice

All information products included in http://ics-cert.us-cert.gov are provided "as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see http://www.us-cert.gov/tlp/.



Overview

This advisory provides mitigation details for a vulnerability that impacts the Ecava IntegraXor application. Independent researcher Andrew Brooks has identified a buffer overflow vulnerability in Ecava’s IntegraXor application.

Ecava has produced a patch that mitigates this vulnerability. The researcher has tested the patch to validate that it resolves this vulnerability.

Exploitation of this vulnerability would allow an attacker to execute arbitrary code or cause a denial of service (DoS).
This vulnerability could be exploited remotely.

Affected Products

The following IntegraXor versions are affected:

  • IntegraXor SCADA Server 4.00 build 4250.0 and earlier.

Impact

Successfully exploiting this vulnerability could lead to a DoS for the application or could allow an attacker to execute arbitrary code. This could impact multiple sectors, including critical manufacturing.

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

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

PE3DO32A.OCX Buffer Overflow1

The vulnerability originates from buffer overflows in the PE3DO32A.ocx service component and can occur in multiple locations of the module. An attacker would need to create a specially crafted Web page or file with an ActiveX component for the client to open. This could allow an
attacker to cause a crash or to execute arbitrary code.

CVE-2012-4700 has been assigned to this vulnerability. A CVSS v2 base score of 9.3 has been assigned; the CVSS vector string is (AV:N/AC:M/Au:N/C:C/I:C/A:C).2

Vulnerability Details

Exploitability

This vulnerability is remotely exploitable.

Existence of Exploit

No known public exploits specifically target this vulnerability.

Difficulty

Social engineering is required to convince a user to go to a specially crafted Web page to exploit the vulnerability remotely. An attacker with a moderate skill level would be able to exploit the buffer overflow.

Mitigation

Ecava has issued a customer notification that details this vulnerability and provides mitigations to its customers.

Ecava recommends users download and install the update, IntegraXor SCADA Server 4.00.4280, from their download Web site. The vendor also recommends that users disable ActiveX on systems where the application is being used.

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 US-CERT Web page. 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 taking defensive measures.


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.

Was this document helpful?  Yes  |  Somewhat  |  No

Back to Top