Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2019.3444
Advisory (icsa-19-253-02) Siemens SINETPLAN
11 September 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Siemens SINETPLAN
Publisher: ICS-CERT
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Access Confidential Data -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-10915
Reference: ESB-2019.2587
Original Bulletin:
https://www.us-cert.gov/ics/advisories/icsa-19-253-02
- --------------------------BEGIN INCLUDED TEXT--------------------
ICS Advisory (ICSA-19-253-02)
Siemens SINETPLAN
Original release date: September 10, 2019
Legal Notice
All information products included in http://ics-cert.us-cert.gov are
provided"as is" for informational purposes only. The Department of Homeland
Security (DHS) does not provide any warranties of any kind regarding any
information contained within. DHS does not endorse any commercial product or
service, referenced in this product or otherwise. Further dissemination of this
product is governed by the Traffic Light Protocol (TLP) marking in the header.
For more information about TLP, see http://www.us-cert.gov/tlp/ .
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
affected:
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/
C:L/I:H/A:H ).
3.3 BACKGROUND
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
3.4 RESEARCHER
Siemens reported this vulnerability to CISA.
4. MITIGATIONS
Siemens recommends users update TIA Administrator to Version 1.0 SP1 Upd1.
Updates can be found at the following link:
https://support.industry.siemens.com/cs/ww/en/view/114358
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
following location:
http://www.siemens.com/cert/advisories
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
Strategies .
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.
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=K4w7
-----END PGP SIGNATURE-----