-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

# SSA-330339: Web Vulnerabilities in SINEC NMS

Publication Date:        2021-09-14
Last Update:             2021-09-14
Current Version:         1.0
CVSS v3.1 Base Score:    8.8

SUMMARY
=======

A recent update for SINEC NMS fixed multiple vulnerabilities. The most
severe of these vulnerabilities could allow an attacker to manipulate
the SINEC NMS configuration by tricking an admin to click on a malicious
link.

Siemens has released an update for SINEC NMS and recommends to update to
the latest version.


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


* SINEC NMS 
  - Affected versions:
       All versions < V1.0 SP1
  - Remediation:
       Update to V1.0 SP1 or later version
  - Download:
       https://support.industry.siemens.com/cs/ww/en/view/109776939/


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

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

* Do not access links from untrusted sources



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

As a general security measure, Siemens strongly recommends to protect
network access to devices with appropriate mechanisms. In order to
operate the devices in a protected IT environment, Siemens recommends to
configure the environment according to Siemens' operational guidelines
for Industrial Security (Download:
https://www.siemens.com/cert/operational-guidelines-industrial-security),
and to follow the recommendations in the product manuals.

Additional information on Industrial Security by Siemens can be found
at: https://www.siemens.com/industrialsecurity

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

SINEC NMS is a new generation of the Network Management System (NMS) for
the Digital Enterprise. This system can be used to centrally monitor,
manage, and configure networks.

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-2021-37200

  An attacker with access to the webserver of an affected system could
  download arbitrary files from the underlying filesystem by sending a
  specially crafted HTTP request.

  CVSS v3.1 Base Score: 7.7
  CVSS Vector:          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C
  CWE:                  CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path
Traversal')

* Vulnerability CVE-2021-37201

  The web interface of affected devices is vulnerable to a Cross-Site
  Request Forgery (CSRF) attack. This could allow an attacker to
  manipulate the SINEC NMS configuration by tricking an unsuspecting user
  with administrative privileges to click on a malicious link.

  CVSS v3.1 Base Score: 8.8
  CVSS Vector:          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
  CWE:                  CWE-352: Cross-Site Request Forgery (CSRF)




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 (2021-09-14): 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.
-----BEGIN PGP SIGNATURE-----
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=G/0C
-----END PGP SIGNATURE-----