CVSS v3 9.8
Attention: Exploitable remotely/low skill level to exploit.
Successful exploitation of this vulnerability during tag, alarm, or event related actions could allow remote code execution that, under high privileges, could completely compromise the device.
The following versions of InduSoft Web Studio and InTouch Machine Edition, an HMI, are affected:
A remote attacker could send a carefully crafted packet during a tag, alarm, or event related action such as read and write, which may allow remote code execution.
Tenable Research reported this vulnerability to Schneider Electric Software, LLC and Schneider Electric Software, LLC coordinated with NCCIC.
Schneider Electric Software, LLC recommends:
Schneider Electric Software, LLC has also released Security Bulletin LFSEC00000125 that can be found at:
NCCIC recommends that users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
NCCIC 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.
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, that is available for download from the ICS-CERT website.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to NCCIC for tracking and correlation against other incidents.
For any questions related to this report, please contact the NCCIC at:
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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