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AUSCERT External Security Bulletin Redistribution
Advisory (icsa-19-253-02) Siemens SINETPLAN
11 September 2019
AusCERT Security Bulletin Summary
Product: Siemens SINETPLAN
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Access Confidential Data -- Existing Account
Denial of Service -- Existing Account
CVE Names: CVE-2019-10915
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ICS Advisory (ICSA-19-253-02)
Original release date: September 10, 2019
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1. EXECUTIVE SUMMARY
o CVSS v3 8.0
o ATTENTION: Low skill level to exploit
o Vendor: Siemens
o Equipment: Siemens Network Planner (SINETPLAN)
o Vulnerability: Improper Authorization
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow information
disclosure, code execution, and denial-of-service.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of SINETPLAN, an automation systems planner, are
o SINETPLAN Version 2.0
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER AUTHORIZATION CWE-285
The integrated configuration web application allows the execution of certain
application commands without proper authentication.
CVE-2019-10915 has been assigned to this vulnerability. A CVSS v3 base score of
8.0 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:N/S:U/
o CRITICAL INFRASTRUCTURE SECTORS: Chemical, Critical Manufacturing, Energy,
Food and Agriculture, Water and Wastewater Systems
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Germany
Siemens reported this vulnerability to CISA.
Siemens recommends users update TIA Administrator to Version 1.0 SP1 Upd1.
Updates can be found at the following link:
Siemens has identified the following specific workarounds and mitigations users
can apply to reduce the risk:
o Restrict access to Port 8888/TCP to localhost
As a general security measure, Siemens strongly recommends users protect
network access to devices with appropriate mechanisms. In order to operate the
devices in a protected IT environment, Siemens recommends users configure the
environment according to Siemens' operational guidelines for industrial
security (download: https://www.siemens.com/cert/
operational-guidelines-industrial-security ), and follow the recommendations in
the product manuals. Additional information on industrial security by Siemens
can be found at: https://www.siemens.com/industrialsecurity
For more information, please see Siemens Security Advisory SSA-834884 at the
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:
o Minimize network exposure for all control system devices and/or systems,
and ensure that they are not accessible from the Internet .
o Locate control system networks and remote devices behind firewalls, and
isolate them from the business network.
o 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.
CISA reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices
on the ICS webpage on us-cert.gov . 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
on the ICS webpage on us-cert.gov in the Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to CISA for tracking
and correlation against other incidents.
No known public exploits specifically target this vulnerability. This
vulnerability is not exploitable remotely.
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