ATTENTION: Remotely exploitable/low skill level to exploit.
Vendor: Schneider Electric
Equipment: Interactive Graphical SCADA System (IGSS) Software
Vulnerability: DLL Hijacking
Schneider Electric reports that the vulnerability affects the following IGSS HMI desktop application:
An attacker who exploits this vulnerability may be able to remotely execute arbitrary code.
Schneider Electric recommends that users upgrade to Windows 10 to mitigate this vulnerability. Windows 10 enforces a fixed path to the DLL.
More information can be found by visiting Schneider Electric’s security notification number SEVD-2017-090-01 at:
NCCIC/ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
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. This vulnerability requires user interaction or social engineering to exploit.
The software will execute a malicious file if it is named the same as a legitimate file and placed in a location that is earlier in the search path.
Karn Ganeshen reported this vulnerability.
Critical Infrastructure Sectors: Critical Manufacturing, Energy
Area Deployed: Worldwide
Company Headquarters Location: 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://us-cert.cisa.gov/ics
or incident reporting: https://us-cert.cisa.gov/report
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