Successful exploitation of this vulnerability could possibly allow remote attackers to stop the execution of code on affected equipment.
The following versions of DNP3 Outstation .NET Protocol components and DNP3 Outstation ANSI C source code libraries are affected:
A specially crafted message may cause a stack-based buffer overflow. Authentication is not required to exploit this vulnerability.
Incite Team of Steven Seeley and Chris Anastasio working with Trend Micro’s Zero Day Initiative reported this vulnerability to Triangle MicroWorks.
Triangle Microworks recommends users update to Version 3.26.
Please contact Triangle MicroWorks support for additional details.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on us-cert.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.gov in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
No known public exploits specifically target this vulnerability.
For any questions related to this report, please contact the CISA at:
Toll Free: 1-888-282-0870
For industrial control systems cybersecurity information: https://www.us-cert.gov/ics
or incident reporting: https://www.us-cert.gov/report
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