GEOVAP Reliance SCADA

CVSS v3 6.1

**ATTENTION:**Remotely exploitable/low skill level to exploit.

Vendor: GEOVAP

Equipment: Reliance SCADA

Vulnerability: Cross-site Scripting

AFFECTED PRODUCTS

The following versions of Reliance SCADA, a software management platform, are affected:

• Reliance SCADA Version 4.7.3 Update 2 and prior.

IMPACT

Successful exploitation of this vulnerability could allow an unauthenticated attacker to inject arbitrary JavaScript in a specially crafted URL request that may allow for read/write access.

MITIGATION

GEOVAP has released Version 4.7.3 Update 3 of the software which can be found at:

<https://www.reliance-scada.com/en/download&gt;

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.

VULNERABILITY OVERVIEW

IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION (‘CROSS-SITE SCRIPTING’) CWE-79

This vulnerability could allow an unauthenticated attacker to inject arbitrary code.

CVE-2017-16721 has been assigned to this vulnerability. A CVSS v3 base score of 6.1 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

RESEARCHER

Can Demirel of Biznet Bilisim reported the vulnerability to ICS-CERT.

BACKGROUND

Critical Infrastructure Sectors: Critical Manufacturing, Energy, Transportation Systems, and Water and Wastewater Systems

Countries/Areas Deployed: Worldwide

Company Headquarters Location: Czech Republic