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AUSCERT External Security Bulletin Redistribution
Advisory (ICSA-17-227-01): Advantech WebOP
17 August 2017
AusCERT Security Bulletin Summary
Product: Advantech WebOP
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
CVE Names: CVE-2017-12705
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Original release date: August 15, 2017
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CVSS v3 4.8
ATTENTION: Low skill level to exploit. Public exploits are available.
Vulnerability: Heap-Based Buffer Overflow
Researchers report that all versions of Advantech WebOP operator panels
Successful exploitation of this vulnerability could cause the target device
to crash and may allow arbitrary code execution.
Advantech was unable to verify the validity of this vulnerability.
ZDI recommends that this product be restricted to interact with trusted
NCCIC/ICS-CERT recommends that users take the following measures to protect
themselves from social engineering attacks:
Do not click web links or open unsolicited attachments in email messages,
Refer to Recognizing and Avoiding Email Scams for more information on
avoiding email scams, and
Refer to Avoiding Social Engineering and Phishing Attacks for more
information on 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.
HEAP-BASED BUFFER OVERFLOW CWE-122
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
Ariele Caltabiano (kimiya) working with Trend Micro's Zero Day Initiative
reported this vulnerability.
Critical Infrastructure Sectors: Critical Manufacturing
Countries/Areas Deployed: North America, East Asia
Company Headquarters Location: Taiwan
For any questions related to this report, please contact ICS-CERT at:
Email: firstname.lastname@example.org (link sends e-mail)
Toll Free: 1-877-776-7585
International Callers: (208) 526-0900
For industrial control systems security information and incident reporting:
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