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# SSA-148641: XPath Constraint Vulnerability in Mendix Runtime

Publication Date:        2022-03-08
Last Update:             2022-04-12
Current Version:         1.1
CVSS v3.1 Base Score:    6.8

SUMMARY
=======

A XPath Constraint vulnerability in the Mendix Runtime was discovered,
that can affect the running applications. The vulnerability could allow
a malicious user to deduce contents of inaccessible attributes and
modify sensitive data.

Mendix has released updates for the affected product lines, recommends
to update to the latest versions and to redeploy the applications.


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


* Mendix Applications using Mendix 7
  - Affected versions:
       All versions < V7.23.29
  - Remediation:
       Update to V7.23.29 or later version and redeploy your application
  - Download:
       https://docs.mendix.com/releasenotes/studio-pro/7.23/

* Mendix Applications using Mendix 8
  - Affected versions:
       All versions < V8.18.16
  - Remediation:
       Update to V8.18.16 or later version and redeploy your application
  - Download:
       https://docs.mendix.com/releasenotes/studio-pro/8.18/

* Mendix Applications using Mendix 9
  - Affected versions:
       All deployments with Runtime Custom Setting
       _DataStorage.UseNewQueryHandler_ set to False
  - Remediation:
       Set Runtime Custom Setting _DataStorage.UseNewQueryHandler_ to True or
       remove the custom setting. The value is set to True by default
  - Download:
       https://docs.mendix.com/developerportal/deploy/environments-details#runtime-tab


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


Product specific remediations or mitigations can be found in the section
"Affected Products and Solution".

Please follow the "General Security Recommendations".


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

Mendix is a high productivity app platform that enables you to build and
continuously improve mobile and web applications at scale. The Mendix
Platform is designed to accelerate enterprise app delivery across your
entire application development lifecycle, from ideation to deployment
and operations.

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-2022-24309

  If an entity has an association readable by the user, then in some
  cases, Mendix Runtime may not apply checks for XPath constraints that
  parse said associations, within apps running on affected versions. A
  malicious user could use this to dump and manipulate sensitive data.

  CVSS v3.1 Base Score: 6.8
  CVSS Vector:          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N/E:P/RL:O/RC:C
  CWE:                  CWE-284: Improper Access Control




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 (2022-03-08): Publication Date
V1.1 (2022-04-12): Summary update; Default configuration for Mendix 9 is not affected; CVSS
vector review

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.

Copyright: Siemens 2022
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