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CVSS v3 6.8
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:
- IGSS Software, Version 12 and previous versions.
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:
- Do not click web links or open unsolicited attachments in email messages.
- Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
- Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
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
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