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Advisory (ICSA-13-225-02)

OSIsoft Multiple Vulnerabilities

Original release date: August 13, 2013

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OVERVIEW

OSIsoft has identified multiple vulnerabilities in the PI Interface for IEEE C37.118 and reported them to ICS-CERT. OSIsoft has produced a software update that mitigates these vulnerabilities. OSIsoft has tested the software update to validate that it resolves the vulnerabilities. Exploitation of these vulnerabilities could allow an attacker to shut down the PI Interface for IEEE C37.118 instance and cause a data gap for PI points belonging to it.

These vulnerabilities could be exploited remotely.

AFFECTED PRODUCTS

The following OSIsoft PI Interfaces are affected:

  • All versions of the PI Interface for IEEE C37.118 prior to Version 1.0.6.158.

IMPACT

Successful exploitation of these vulnerabilities could shut down the PI Interface for the IEEE C37.118 instance and cause a data gap for PI points belonging to it.

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

OSIsoft is a US-based company that maintains its headquarters in San Leandro, California, with operations globally.

The affected product, PI Interface for IEEE C37.118, collects information from synchro-phasor measurement units (PMU devices). According to OSIsoft, PI Interface for IEEE C37.118 is deployed across electric utilities and associated research entities. OSIsoft estimates that these products are used primarily in the United States and Europe with a small percentage in Asia.

VULNERABILITY CHARACTERIZATION

VULNERABILITY OVERVIEW

IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFERa

The PI Interface for IEEE C37.118 could read from an invalid memory address when processing C37.118 configuration packets. This could allow the attacker to shut down the PI Interface for IEEE C37.118 instance and cause a data gap for PI points belonging to it.

CVE-2013-2801b 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

IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFERa

The PI Interface for IEEE C37.118 could corrupt or exhaust memory when processing C37.118 configuration packets. This could allow the attacker to shut down the PI Interface for IEEE C37.118 instance and cause a data gap for PI points belonging to it.

CVE-2013-2800d 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

These vulnerabilities could be exploited remotely.

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

OSIsoft has produced a software update that resolves these vulnerabilities. OSIsoft encourages customers using the affected product to upgrade to Version 1.0.6.158 or later. The software update can be found at the OSIsoft technical support Web site:

http://techsupport.osisoft.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.e 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,f that is available for download from the ICS-CERT Web page (http://ics-cert.us-cert.gov/).

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 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

ICS-CERT continuously strives to improve its products and services. You can help by choosing one of the links below to provide feedback about this product.

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