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# SSA-621493: Password Storage Vulnerability in SIMATIC STEP7 (TIA Portal)

Publication Date:        2018-11-13
Last Update:             2018-11-13
Current Version:         1.0
CVSS v3.0 Base Score:    4.0

SUMMARY
=======

The latest update for SIMATIC STEP7 (TIA Portal) fixes a vulnerability
that could allow an attacker with local access to a project file to
reconstruct certain passwords stored in the project.

Siemens recommends to update to the new version.


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


* SIMATIC STEP 7 (TIA Portal) 
  - Affected versions:
       All Versions < V15.1
  - Remediation:
       Update to V15.1
  - Download:
       https://support.industry.siemens.com/cs/us/en/view/109758794


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

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

* Restrict network access to the engineering station and project storage
to trusted sources.
  
* Restrict access to project files on the engineering station and project
storage to trusted users.
  


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

SIMATIC STEP 7 (TIA Portal) is an engineering software to configure and
program SIMATIC controllers.



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

The vulnerability classification has been performed by using the CVSS scoring
system in version 3.0 (CVSS v3.0) (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.


* Vulnerability CVE-2018-13811

  Password hashes with insufficient computational effort could allow an
  attacker to access to a project file and reconstruct passwords.
  
  The vulnerability could be exploited by an attacker with local access to
  the project file. No user interaction is required to exploit the
  vulnerability. The vulnerability could allow the attacker to obtain
  certain passwords from the project.
  
  At the time of advisory publication no public exploitation of this
  vulnerability was known.

  CVSS v3.0 Base Score: 4.0
  CVSS v3.0 Vector:     CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C




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 (2018-11-13): 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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