SpiderControl SCADA MicroBrowser

CVSS v3 7.3

ATTENTION: Remotely exploitable/low skill level to exploit.

Vendor: SpiderControl

Equipment: SCADA MicroBrowser

Vulnerability: Stack-based Buffer Overflow

AFFECTED PRODUCTS

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

• SCADA MicroBrowser Versions 1.6.30.144 and prior.

IMPACT

Successful exploitation of this vulnerability could allow an attacker to gain access to the system, manipulate system files, and potentially render the system unavailable.

MITIGATION

SpiderControl has produced a new version of the software (Version 1.6.40.148) that can be found at:

http://www.ininet.ch/public/MicroBrowser/XP/index.html

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

Opening a maliciously crafted html file may cause a stack overflow.

CVE-2017-12707 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

RESEARCHER

Karn Ganeshen, working with Trend Micro’s Zero Day Initiative (ZDI), discovered this vulnerability.

BACKGROUND

Critical Infrastructure Sector: Critical Manufacturing

Countries/Areas Deployed: Europe

Company Headquarters Location: Switzerland

• SpiderControl