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# SSA-831168: Cross-Site Scripting Vulnerability in Spectrum Power 4

Publication Date:        2022-02-08
Last Update:             2022-02-08
Current Version:         1.0
CVSS v3.1 Base Score:    5.4

SUMMARY
=======

A Cross-Site Scripting (XSS) vulnerability is found in the integrated
web application "Online Help" of Spectrum Power 4.

Siemens has released an update for the Spectrum Power 4 and recommends
to update to the latest version.


AFFECTED PRODUCTS AND SOLUTION
==============================


* Spectrum Power 4
  - Affected versions:
       All versions < V4.70 SP9 Security Patch 1
  - Remediation:
       Update to V4.70 SP9 Security Patch 1 or later version. Please contact
       your local Siemens representative.
       See further recommendations from section "Workarounds and Mitigations"


WORKAROUNDS AND MITIGATIONS
===========================

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

* Do not open unknown links while working on Spectrum Power 4.



GENERAL SECURITY RECOMMENDATIONS
================================

Operators of critical power systems (e.g. TSOs or DSOs) worldwide are
usually required by regulations to build resilience into the power grids
by applying multi-level redundant secondary protection schemes. It is
therefore recommended that the operators check whether appropriate
resilient protection measures are in place. The risk of cyber incidents
impacting the grid's reliability can thus be minimized by virtue of the
grid design.

Siemens strongly recommends applying the provided security updates using
the corresponding tooling and documented procedures made available with
the product. If supported by the product, an automated means to apply
the security updates across multiple product instances may be used.
Siemens strongly recommends prior validation of any security update
before being applied, and supervision by trained staff of the update
process in the target environment.

As a general security measure Siemens strongly recommends to protect
network access with appropriate mechanisms (e.g. firewalls,
segmentation, VPN). It is advised to configure the environment according
to our operational guidelines in order to run the devices in a protected
IT environment.

Recommended security guidelines to Digital Grid Products can be found
at:

https://www.siemens.com/gridsecurity

PRODUCT DESCRIPTION
===================

Spectrum Power provides basic components for SCADA, communications, and
data modeling for control and monitoring systems. Application suites can
be added to optimize network and generation management for all areas of
energy management.

VULNERABILITY CLASSIFICATION
============================

The vulnerability classification has been performed by using the CVSS scoring
system in version 3.1 (CVSS v3.1) (https://www.first.org/cvss/). The CVSS
environmental score is specific to the customer's environment and will impact
the overall CVSS score. The environmental score should therefore be
individually defined by the customer to accomplish final scoring.

An additional classification has been performed using the CWE classification, a
community-developed list of common software security weaknesses. This serves as
a common language and as a baseline for weakness identification, mitigation,
and prevention efforts. A detailed list of CWE classes can be found at:
https://cwe.mitre.org/.



* Vulnerability CVE-2022-23312

  The integrated web application "Online Help" in affected product
  contains a Cross-Site Scripting (XSS) vulnerability that could be
  exploited if unsuspecting users are tricked into accessing a malicious
  link.

  CVSS v3.1 Base Score: 5.4
  CVSS Vector:          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
  CWE:                  CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site
Scripting')


ACKNOWLEDGMENTS
===============

Siemens thanks the following parties for their efforts:

   * Jacinto Moral Matellán and Aarón Flecha Menéndez from S21Sec for reporting the vulnerability



ADDITIONAL INFORMATION
======================

For further inquiries on security vulnerabilities in Siemens products and
solutions, please contact the Siemens ProductCERT:

https://www.siemens.com/cert/advisories


HISTORY DATA
============

V1.0 (2022-02-08): Publication Date

TERMS OF USE
============

Siemens Security Advisories are subject to the terms and conditions contained
in Siemens' underlying license terms or other applicable agreements previously
agreed to with Siemens (hereinafter "License Terms"). To the extent applicable
to information, software or documentation made available in or through a
Siemens Security Advisory, the Terms of Use of Siemens' Global Website
(https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in
particular Sections 8-10 of the Terms of Use, shall apply additionally. In case
of conflicts, the License Terms shall prevail over the Terms of Use.
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