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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.
C3-ilex reports that the vulnerabilities affect all EOScada versions prior to 126.96.36.199.
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.
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).
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.
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.
The eosfailoverservice.exe returns data in clear text when a connection is made to Port TCP/12000.
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.
These vulnerabilities are remotely exploitable.
Existence of Exploit
No known public exploits specifically target these vulnerabilities.
An attacker with a low skill would be able to exploit these vulnerabilities.
C3-ilex recommends customers install the EOScada patch. Customers with a service agreement should contact C3-ilex’s Helpdesk at firstname.lastname@example.org 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.
- 1. http://cwe.mitre.org/data/definitions/284.html, Web site last accessed November 01, 2012.
- 2. http://cwe.mitre.org/data/definitions/399.html, Web site last accessed November 01, 2012.
- 3. http://cwe.mitre.org/data/definitions/200.html, Web site last accessed November 01, 2012.
- 4. http://cwe.mitre.org/data/definitions/399.html, Web site last accessed November 01, 2012.
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