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AUSCERT External Security Bulletin Redistribution
Multiple vulnerabilities have been identified in Advantech WebAccess/SCADA
24 January 2018
AusCERT Security Bulletin Summary
Product: Advantech WebAccess/SCADA
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
CVE Names: CVE-2018-5445 CVE-2018-5443
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Original release date: January 23, 2018
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CVSS v3 5.3
ATTENTION: Remotely exploitable/low skill level to exploit.
Vulnerabilities: Path Traversal, SQL Injection
The following versions of WebAccess/SCADA, a SCADA software platform, are
WebAccess/SCADA versions prior to V8.2_20170817
Successful exploitation of these vulnerabilities could allow sensitive
information to be disclosed from the target or database without
Advantech has released a version 8.3.0 of WebAccess/SCADA to address the
reported vulnerabilities. Users can download the latest version of
WebAccess/SCADA at the following location (registration required):
http://www.advantech.com/industrial-automation/webaccess/download (link is
NCCIC/ICS-CERT recommends that users take defensive measures to minimize the
risk of exploitation of these vulnerabilities. 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 these vulnerabilities.
IMPROPER LIMITATION OF A PATHNAME TO A RESTRICTED DIRECTORY ('PATH TRAVERSAL')
An attacker has read access to files within the directory structure of the
CVE-2018-5445 has been assigned to this vulnerability. A CVSS v3 base score of
5.3 has been calculated; the CVSS vector string is
IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN SQL COMMAND ('SQL
WebAccess/SCADA does not properly sanitize its inputs for SQL commands.
CVE-2018-5443 has been assigned to this vulnerability. A CVSS v3 base score of
5.3 has been calculated; the CVSS vector string is
rgod working with Trend Micros Zero Day Initiative reported these
vulnerabilities to ICS-CERT.
Critical Infrastructure Sectors: Critical Manufacturing, Energy, Water and
Countries/Areas Deployed: East Asia, United States, Europe
Company Headquarters Location: Taiwan
For any questions related to this report, please contact the NCCIC at:
Email: NCCICCUSTOMERSERVICE@hq.dhs.gov (link sends e-mail)
Toll Free: 1-888-282-0870
For industrial control systems cybersecurity information:
or incident reporting: https://ics-cert.us-cert.gov/Report-Incident?
The NCCIC continuously strives to improve its products and services. You can
help by choosing one of the links below to provide feedback about this
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