ICSA： ICS Advisory (ICSA-18-011-02)
CVSS v3 7.8
ATTENTION: Low skill level to exploit.
Vulnerability: Unquoted Search Path or Element.
The following versions of MXview, network management software, are affected:
- MXview v2.8 and prior.
Successful exploitation of this vulnerability could allow a local authorized user with file access to escalate privileges by inserting arbitrary code into the unquoted service path.
Moxa has produced new firmware Version 2.9 for the affected devices that can be downloaded from:
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.
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 is not remotely exploitable.
The unquoted service path escalation vulnerability could allow an authorized user with file access to escalate privileges by inserting arbitrary code into the unquoted service path.
Karn Ganeshen reported the vulnerability to ICS-CERT.
Critical Infrastructure Sectors: Critical Manufacturing, Energy, Transportation Systems
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Taiwan