ATTENTION: Remotely exploitable/low skill level to exploit.
Vendor: Schneider Electric
Vulnerability: Improper Input Validation
The following versions of ClearSCADA, server and communications driver processes, are affected:
Successful exploitation of this vulnerability could cause the ClearSCADA server process and communications driver processes to terminate.
Schneider Electric has released the following updates to mitigate the vulnerability:
Users of ClearSCADA 2013 R2 and prior versions should upgrade to the latest ClearSCADA 2015 R2 hotfix to mitigate the vulnerability.
Each of the Service Pack and hotfixes above are available for direct download from Schneider Electric’s web site at:
More information can be found by visiting Schneider Electric’s Security Notification at:
Schneider Electric recommends users include the following measures in their SCADA strategies:
ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
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.
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 web site.
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.
No known public exploits specifically target this vulnerability.
An attacker with network access to the ClearSCADA server can send specially crafted sequences of commands and data packets to the ClearSCADA server that can cause the ClearSCADA server process and ClearSCADA communications driver processes to terminate.
Sergey Temnikov and Vladimir Dashchenko of Kapersky Lab’s Critical Infrastructure Defense Team identified and reported the vulnerability to Schneider Electric.
Critical Infrastructure Sector(s): Critical Manufacturing
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Paris, France
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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