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AUSCERT External Security Bulletin Redistribution
Advisory (ICSA-17-264-04): iniNet Solutions GmbH SCADA Webserver
22 September 2017
AusCERT Security Bulletin Summary
Product: iniNet Solutions GmbH SCADA Webserver
Operating System: Network Appliance
Impact/Access: Modify Arbitrary Files -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
CVE Names: CVE-2017-13995
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iniNet Solutions GmbH SCADA Webserver
Original release date: September 21, 2017
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CVSS v3 10.0
ATTENTION: Remotely exploitable/low skill level to exploit.
Vendor: iniNet Solutions GmbH
Equipment: SCADA Webserver
Vulnerability: Improper Authentication
The following versions of iniNet Solutions GmbH's SCADA Webserver, a
third-party web-based server software, are affected:
iniNet Webserver, All versions prior to V2.02.0100
Successful exploitation of this vulnerability could allow malicious users to
access human-machine interface (HMI) pages or to modify programmable logic
controller (PLC) variables without authentication.
IniNet Solutions GmbH has released a new version of the SCADA Webserver,
V2.02.0100, which allows users to implement basic authentication. It can be
found at the following location (login required):
Instructions for implementing basic authentication can be found in the user
manual for V2.02.0100.
IniNet Solutions GmbH reminds users that the webserver is designed to be used
in a protected environment.
As a third-party software, the iniNet Webserver is used in many different
vendors' products. Asset owners should determine if they are using a
vulnerable version of the iniNet Webserver and follow the recommended
IniNet Solutions GmbH recommends that users never connect PLCs to the
Internet. If a user must connect to the Internet, IniNet Solutions GmbH
recommends using a managed infrastructure to do so.
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.
IMPROPER AUTHENTICATION CWE-287
The webserver does not properly authenticate users, which may allow a
malicious attacker to access sensitive information such as HMI pages or modify
CVE-2017-13995 has been assigned to this vulnerability. A CVSS v3 base score
of 10.0 has been assigned; the CVSS vector string is
Matthias Niedermaier and Florian Fischer, both of Augsburg University of
Applied Sciences, reported this vulnerability.
Critical Infrastructure Sector: Critical Manufacturing
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Switzerland
For any questions related to this report, please contact ICS-CERT at:
Toll Free: 1-877-776-7585
International Callers: (208) 526-0900
For industrial control systems security information and incident reporting:
ICS-CERT 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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