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TLP:WHITE

Advisory (ICSA-17-227-01)

Advantech WebOP

Original release date: August 15, 2017

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CVSS v3 4.8

ATTENTION: Low skill level to exploit. Public exploits are available.

Vendor: Advantech

Equipment: WebOP

Vulnerability: Heap-Based Buffer Overflow

AFFECTED PRODUCTS

Researchers report that all versions of Advantech WebOP operator panels are affected.

IMPACT

Successful exploitation of this vulnerability could cause the target device to crash and may allow arbitrary code execution.

MITIGATION

Advantech was unable to verify the validity of this vulnerability.

ZDI recommends that this product be restricted to interact with trusted files only.

NCCIC/ICS-CERT recommends that users take the following measures to protect themselves from social engineering attacks:

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.

Public exploits specifically target this vulnerability. This vulnerability is not remotely exploitable. Low skill level is needed to exploit.

VULNERABILITY OVERVIEW

A maliciously crafted project file may be able to trigger a heap-based buffer overflow, which may crash the process and allow an attacker to execute arbitrary code.

CVE-2017-12705 has been assigned to this vulnerability. A CVSS v3 base score of 4.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L).

RESEARCHER

Ariele Caltabiano (kimiya) working with Trend Micro's Zero Day Initiative reported this vulnerability.

BACKGROUND

Critical Infrastructure Sectors: Critical Manufacturing

Countries/Areas Deployed: North America, East Asia

Company Headquarters Location: Taiwan


Contact Information

For any questions related to this report, please contact the NCCIC at:

Email: NCCICCUSTOMERSERVICE@hq.dhs.gov
Toll Free: 1-888-282-0870

For industrial control systems cybersecurity information:  http://ics-cert.us-cert.gov 
or incident reporting:  https://ics-cert.us-cert.gov/Report-Incident?

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