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TLP:WHITE

Advisory (ICSA-12-271-01)

C3-ilex EOScada Multiple Vulnerabilities

Original release date: November 01, 2012 | Last revised: April 30, 2013

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Overview

This Advisory is a follow-up release to the original Advisory which was posted to the US-CERT secure Portal library October 08, 2012.

Dale Peterson of Digital Bond has identified multiple vulnerabilities in the C3-ilex’s EOScada application that can result in data leakage and a denial-of-service (DoS) condition. C3-ilex’s has produced a patch that resolves these vulnerabilities.

Affected Products

C3-ilex reports that the vulnerabilities affect all EOScada versions prior to 11.0.19.2.

Impact

Successful exploitation of these vulnerabilities may cause a DoS or data leakage.

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

Background

C3-ilex’s EOScada is a real-time Windows-based Energy Management System for electrical, water, sewage, and gas applications. The EOScada platform features a distributed processing, networked configuration using PCs running Microsoft Windows. The EOScada product line includes PC-based Master Stations as well as remote terminal units (RTUs) that perform communication, data concentration, and connections to a variety of intelligent electronic devices (IEDs).

Vulnerability Characterization

Vulnerability Overview

Improper Access Control1

The EOS Core Scada.exe does not restrict access that causes a DoS condition when attached to Port 5050/TCP or Port 24004/TCP, and any random data are sent to either port. The application will crash and restart and will be unavailable to legitimate users during that time.

CVE-2012-1810 has been assigned to this vulnerability. A CVSS V2 base score of 5.0 has also been assigned; the CVSS vector string is (AV:N/AC:L/Au:N/C:N/I:N/A:P).

Resource Management Errors2

The EOSDataServer.exe attached to Port 24006/TCP is susceptible to a Resource Management Error when a large amount of random data is sent to the port.

CVE-2012-1811 has been assigned to this vulnerability. A CVSS V2 base score of 7.8 has also been assigned; the CVSS vector string is (AV:N/AC:L/Au:N/C:N/I:N/A:C).

Data Leakage3

The eosfailoverservice.exe returns data in clear text when a connection is made to Port TCP/12000.

CVE-2012-1812 has been assigned to this vulnerability. A CVSS V2 base score of 5.0 has also been assigned; the CVSS vector string is (AV:N/AC:L/Au:N/C:N/I:P/A:N).

Resource Management Errors4

The eosfailoverservice.exe attached to Port 12000/TCP is susceptible to a Resource Management Error when a large amount of random data is sent to the port.

CVE-2012-1813 has been assigned to this vulnerability. A CVSS V2 base score of 7.8 has also been assigned; the CVSS vector string is (AV:N/AC:L/Au:N/C:N/I:N/A:C).

Vulnerability Details

Exploitability

These vulnerabilities are remotely exploitable.

Existence of Exploit

No known public exploits specifically target these vulnerabilities.

Difficulty

An attacker with a low skill would be able to exploit these vulnerabilities.

Mitigation

C3-ilex recommends customers install the EOScada patch. Customers with a service agreement should contact C3-ilex’s Helpdesk at helpdesk@c3ilex.com or by calling the Help Desk at (510) 659-8300 x 107 for instructions on how to obtain the release. Customers without a service agreement should contact their C3-ilex Sales Manager for assistance in purchasing this or a later version release.

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, specifically addressing traffic to the ports listed above, 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.

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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