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CVSS v3 7.3
ATTENTION: Remotely exploitable
Vendor: Fuji Electric
Vulnerability: Improper Restriction of Operations within the Bounds of a Memory Buffer
The following versions of V-Server, a data collection and management service, are affected:
- V-Server Version 184.108.40.206 and prior.
Successful exploitation of this memory corruption vulnerability could allow an attacker to remotely execute arbitrary code.
Fuji Electric has produced a patch that can be found at:
NCCIC/ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
- Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet.
- Locate control system networks and remote devices behind firewalls, and isolate them from the business network.
- When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize that VPN is only as secure as the connected devices.
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.
No known public exploits specifically target this vulnerability. High skill level is needed to exploit.
A memory corruption vulnerability has been identified, which may allow remote code execution.
Ariele Caltabiano working with Trend Micro’s Zero Day Initiative identified this vulnerability.
Critical Infrastructure Sector: Critical Manufacturing
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Japan
For any questions related to this report, please contact the NCCIC at:
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