CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS
Percentile
62.1%
Adam Crain of Automatak and Chris Sistrunk of Mandiant have identified an unhandled C++ exception in the MatrikonOPC DNP3 application. MatrikonOPC has produced a new version that mitigates this vulnerability.
This vulnerability could be exploited remotely.
The following MatrikonOPC Server version is affected:
An attacker could potentially use this vulnerability to craft an exploit to cause a denial-of-service (DoS) loop in the MatrikonOPC Server for DNP3 Windows service. Consequences of a successful exploit would result in a disruption of OPC data until the OPC Server is manually restarted.
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.
MatrikonOPC is an Edmonton, Canada-based company that maintains offices in several countries around the world, including the United States, Germany, Russia, Australia, Singapore, Norway, Brazil, UK, India, Spain, Portugal, and Costa Rica.
The affected product, MatrikonOPC Server for DNP3, is Microsoft Windows-based software that facilitates connectivity to multiple DNP3 compliant devices such as remote terminal units, programmable logic controllers, and meters. According to MatrikonOPC, the MatrikonOPC Server for DNP3 is deployed across several sectors including Chemical and Energy. MatrikonOPC products are used primarily in the US, Canada, and UK.
An unhandled C++ exception occurs upon receiving a specifically formatted message. The DNP3 process within Windows service crashes, and the service cannot be stopped via services dialog. Restoration of service requires a system reboot.
CVE-2014-5426NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-5426, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. has been assigned to this vulnerability. A CVSS v2 base score of 6.8 has been assigned; the CVSS vector string is (AV:N/AC:M/Au:N/C:P/I:P/A:P).CVSS Calculator, http://nvd.nist.gov/cvss.cfm?version=2&vector=AV:N/AC:M/Au:N/C:P/I:P/A:P, web site last accessed November 25, 2014.
This vulnerability could be exploited remotely.
No known public exploits specifically target this vulnerability.
An attacker with a moderate skill would be able to exploit this vulnerability.
MatrikonOPC recommends that asset owners obtain and install the new version as follows:
The researchers suggest the following mitigation:
ICS-CERT encourages asset owners to take additional defensive measures to protect against this and other cybersecurity risks.
ICS-CERT also provides a section for control systems security recommended practices on the 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. 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 ICSβCERT Technical Information Paper, ICS-TIP-12-146-01BβTargeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the 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 ICS-CERT for tracking and correlation against other incidents.
In addition, ICS-CERT recommends that users take the following measures to protect themselves from social engineering attacks:
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