Operating System:

[Appliance]

Published:

11 November 2022

Protect yourself against future threats.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2022.5794
        ICS Advisory (ICSA-22-314-02) Siemens Web Server Login Page
                         of Industrial Controllers
                             11 November 2022

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           SIMATIC Industrial Controllers and Software
Publisher:         ICS-CERT
Operating System:  Network Appliance
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-30694  

Original Bulletin: 
   https://us-cert.cisa.gov/ics/advisories/icsa-22-314-02

Comment: CVSS (Max):  6.5 CVE-2022-30694 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
         CVSS Source: ICS-CERT
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

- --------------------------BEGIN INCLUDED TEXT--------------------

ICS Advisory (ICSA-22-314-02)

Siemens Web Server Login Page of Industrial Controllers

Original release date: November 10, 2022

Legal Notice

All information products included in https://us-cert.cisa.gov/ics 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 https://us-cert.cisa.gov/tlp/ .



1. EXECUTIVE SUMMARY

  o CVSS v3 6.5
  o ATTENTION: Exploitable Remotely/low Attack Complexity
  o Vendor: Siemens
  o Equipment: SIMATIC Industrial Controllers and Software
  o Vulnerability: Cross-Site Request Forgery (CSRF)

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to track
the activity of other users.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The web server login pages of the following Siemens devices are affected:

  o SIMATIC Drive Controller family: All versions.
  o SIMATIC ET 200pro IM154-8 PN/DP CPU (6ES7154-8AB01-0AB0): All versions
    prior to V3.2.19.
  o SIMATIC ET 200pro IM154-8F PN/DP CPU (6ES7154-8FB01-0AB0): All versions
    prior to V3.2.19.
  o SIMATIC ET 200pro IM154-8FX PN/DP CPU (6ES7154-8FX00-0AB0): All versions
    prior to V3.2.19.
  o SIMATIC ET 200S IM151-8 PN/DP CPU (6ES7151-8AB01-0AB0): All versions prior
    to V3.2.19.
  o SIMATIC ET 200S IM151-8F PN/DP CPU (6ES7151-8FB01-0AB0): All versions prior
    to V3.2.19.
  o SIMATIC PC Station: All versions V2.1 and later.
  o SIMATIC S7-300 CPU 314C-2 PN/DP (6ES7314-6EH04-0AB0): All versions prior to
    V3.3.19.
  o SIMATIC S7-300 CPU 315-2 PN/DP (6ES7315-2EH14-0AB0): All versions prior to
    V3.2.19.
  o SIMATIC S7-300 CPU 315F-2 PN/DP (6ES7315-2FJ14-0AB0): All versions prior to
    V3.2.19.
  o SIMATIC S7-300 CPU 315T-3 PN/DP (6ES7315-7TJ10-0AB0): All versions prior to
    V3.2.19.
  o SIMATIC S7-300 CPU 317-2 PN/DP (6ES7317-2EK14-0AB0): All versions prior to
    V3.2.19.
  o SIMATIC S7-300 CPU 317F-2 PN/DP (6ES7317-2FK14-0AB0): All versions prior to
    V3.2.19.
  o SIMATIC S7-300 CPU 317T-3 PN/DP (6ES7317-7TK10-0AB0): All versions prior to
    V3.2.19.
  o SIMATIC S7-300 CPU 317TF-3 PN/DP (6ES7317-7UL10-0AB0): All versions prior
    to V3.2.19.
  o SIMATIC S7-300 CPU 319-3 PN/DP (6ES7318-3EL01-0AB0): All versions prior to
    V3.2.19.
  o SIMATIC S7-300 CPU 319F-3 PN/DP (6ES7318-3FL01-0AB0): All versions prior to
    V3.2.19.
  o SIMATIC S7-400 PN/DP V6 CPU family (incl. SIPLUS variants): All versions.
  o SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants): All versions.
  o SIMATIC S7-1200 CPU family (incl. SIPLUS variants): All versions.
  o SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants):
    All versions.
  o SIMATIC S7-1500 Software Controller: All versions.
  o SIMATIC S7-PLCSIM Advanced: All versions.
  o SIMATIC WinCC Runtime Advanced: All versions.
  o SINUMERIK ONE: All versions.
  o SIPLUS ET 200S IM151-8 PN/DP CPU (6AG1151-8AB01-7AB0): All versions prior
    to V3.2.19.
  o SIPLUS ET 200S IM151-8F PN/DP CPU (6AG1151-8FB01-2AB0): All versions prior
    to V3.2.19.
  o SIPLUS S7-300 CPU 314C-2 PN/DP (6AG1314-6EH04-7AB0): All versions prior to
    V3.3.19.
  o SIPLUS S7-300 CPU 315-2 PN/DP (6AG1315-2EH14-7AB0): All versions prior to
    V3.2.19.
  o SIPLUS S7-300 CPU 315F-2 PN/DP (6AG1315-2FJ14-2AB0): All versions prior to
    V3.2.19.
  o SIPLUS S7-300 CPU 317-2 PN/DP (6AG1317-2EK14-7AB0): All versions prior to
    V3.2.19.
  o SIPLUS S7-300 CPU 317F-2 PN/DP (6AG1317-2FK14-2AB0): All versions prior to
    V3.2.19.

3.2 VULNERABILITY OVERVIEW

3.2.1 CROSS-SITE REQUEST FORGERY (CSRF) CWE-352

The login endpoint /FormLogin in affected web services does not apply proper
origin checking. This could allow authenticated remote attackers to track the
activities of other users via a login cross-site request forgery attack.

CVE-2022-30694 has been assigned to this vulnerability. A CVSS v3 base score of
6.5 has been calculated. the CVSS vector string is ( CVSS:3.1/AV:N/AC:L/PR:N/
UI:R/S:U/C:H/I:N/A:N )

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

K Narahari from Sectrio reported these vulnerabilities to Siemens.

4. MITIGATIONS

Siemens has released updates for the following products and recommends updating
to the latest versions:

  o SIMATIC ET 200pro IM154-8 PN/DP CPU (6ES7154-8AB01-0AB0): Update to V3.2.19
    or later.
  o SIMATIC ET 200pro IM154-8F PN/DP CPU (6ES7154-8FB01-0AB0): Update to
    V3.2.19 or later.
  o SIMATIC ET 200pro IM154-8FX PN/DP CPU (6ES7154-8FX00-0AB0): Update to
    V3.2.19 or later.
  o SIMATIC ET 200S IM151-8 PN/DP CPU (6ES7151-8AB01-0AB0): Update to V3.2.19 
    or later.
  o SIMATIC ET 200S IM151-8F PN/DP CPU (6ES7151-8FB01-0AB0): Update to V3.2.19 
    or later.
  o SIMATIC S7-300 CPU 314C-2 PN/DP (6ES7314-6EH04-0AB0): Update to V3.3.19 or
    later.
  o SIMATIC S7-300 CPU 315-2 PN/DP (6ES7315-2EH14-0AB0): Update to V3.2.19 or
    later.
  o SIMATIC S7-300 CPU 315F-2 PN/DP (6ES7315-2FJ14-0AB0): Update to V3.2.19 or
    later.
  o SIMATIC S7-300 CPU 315T-3 PN/DP (6ES7315-7TJ10-0AB0): Update to V3.2.19 or
    later.
  o SIMATIC S7-300 CPU 317-2 PN/DP (6ES7317-2EK14-0AB0): Update to V3.2.19 or
    later.
  o SIMATIC S7-300 CPU 317F-2 PN/DP (6ES7317-2FK14-0AB0): Update to V3.2.19 or
    later.
  o SIMATIC S7-300 CPU 317T-3 PN/DP (6ES7317-7TK10-0AB0): Update to V3.2.19 or
    later.
  o SIMATIC S7-300 CPU 317TF-3 PN/DP (6ES7317-7UL10-0AB0): Update to V3.2.19 or
    later.
  o SIMATIC S7-300 CPU 319-3 PN/DP (6ES7318-3EL01-0AB0): Update to V3.2.19 or
    later.
  o SIMATIC S7-300 CPU 319F-3 PN/DP (6ES7318-3FL01-0AB0): Update to V3.2.19 or
    later.
  o SIPLUS ET 200S IM151-8 PN/DP CPU (6AG1151-8AB01-7AB0): Update to V3.2.19 or
    later.
  o SIPLUS ET 200S IM151-8F PN/DP CPU (6AG1151-8FB01-2AB0): Update to V3.2.19 
    or later.
  o SIPLUS S7-300 CPU 314C-2 PN/DP (6AG1314-6EH04-7AB0): Update to V3.3.19 or
    later.
  o SIPLUS S7-300 CPU 315-2 PN/DP (6AG1315-2EH14-7AB0): Update to V3.2.19 or
    later.
  o SIPLUS S7-300 CPU 315F-2 PN/DP (6AG1315-2FJ14-2AB0): Update to V3.2.19 or
    later.
  o SIPLUS S7-300 CPU 317-2 PN/DP (6AG1317-2EK14-7AB0): Update to V3.2.19 or
    later.
  o SIPLUS S7-300 CPU 317F-2 PN/DP (6AG1317-2FK14-2AB0): Update to V3.2.19 or
    later.

Siemens has identified the following specific workarounds and mitigations users
can apply to reduce risk:

  o Do not access the product's web service via URLs coming from untrusted
    sources.
  o Disable the web server if possible.
  o SIMATIC PC Station (Specifically): Disable the web server. Note that this
    feature is disabled by default.

As a general security measure, Siemens recommends protecting network access to
devices with appropriate mechanisms. To operate devices in a protected IT
environment, Siemens recommends configuring the environment according to
Siemens' Operational Guidelines for Industrial Security and following
recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the
Siemens industrial security webpage .

For further inquiries on security vulnerabilities in Siemens products and
solutions, users should contact Siemens ProductCERT .

For more information see Siemens Security Advisory SSA-478960 in HTML or CSAF .

CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability these vulnerabilities. Specifically, users
should:

  o Minimize network exposure for all control system devices and/or systems,
    and ensure they are not accessible from the Internet .
  o Locate control system networks and remote devices behind firewalls and
    isolate them from business networks.
  o When remote access is required, use secure methods, such as Virtual Private
    Networks (VPNs), recognizing VPNs may have vulnerabilities and should be
    updated to the most current version available. Also recognize VPN is only
    as secure as its 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 at cisa.gov/ics . Several CISA products detailing cyber
defense best 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 at cisa.gov/ics in the technical information paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies .

Organizations observing suspected malicious activity should follow established
internal procedures and report findings to CISA for tracking and correlation
against other incidents.

For any questions related to this report, please contact the CISA at:

Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870

- --------------------------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: https://auscert.org.au/gpg-key/
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=IJ2T
-----END PGP SIGNATURE-----