ATTENTION: Remotely exploitable/low skill level to exploit.
Vulnerability: Improper Input Validation
All versions of the PCS-9611 relay, a control and monitoring unit, are affected.
Successful exploitation of this vulnerability could allow a remote attacker arbitrary read/write abilities on the system.
NCCIC has reached out to Nari but has not received a response.
NCCIC recommends 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 NCCIC 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 NCCIC for tracking and correlation against other incidents.
No known public exploits specifically target this vulnerability.
An improper input validation vulnerability has been identified that affects a service within the software that may allow a remote attacker to arbitrarily read/access system resources and affect the availability of the system.
Kirill Nesterov and Alexey Osipov from Kaspersky Labs reported the vulnerability to NCCIC.
Critical Infrastructure Sectors: Energy
Countries/Areas Deployed: Asia
Company Headquarters Location: China