AUTODESK TRUST CENTER

Security advisory

Advisories are used to communicate information related to vulnerabilities identified with Autodesk® products and services. This includes any fixes or workarounds that are applicable to the affected product.

DWG Vulnerabilities in the Autodesk® Navisworks Desktop software

Autodesk ID: ADSK-SA-2021-0009
Product, Service, Component: Autodesk® Navisworks
Impact: Out-of-bounds Read, Out-of-bounds Write
Severity: High
Original Publish:13/09/2021
Last Revised: 27/09/2021

Severity

CVSS 3.0 Score

Impact

Low

0.1 - 3.9

A vulnerability where scope and impact of exploitation is restricted and the ability to exploit is extremely difficult.

Medium

4.0 - 6.9

A vulnerability where exploitation is mitigated by factors such as difficulty to exploit, default configuration or ease of identification.

High

7.0 - 8.9

A vulnerability, which if exploited, would directly impact the confidentiality, integrity or availability of user’s data or processing resources.

Critical

9.0 - 10

A vulnerability, which if exploited, would allow remote execution of malicious code without user action.

Summary

Applications and Services that utilize Autodesk Navisworks may be affected by Out-of-bounds Read and Out-of-bounds Write vulnerabilities. Exploitation of these vulnerabilities could lead to code execution.

Description

The details of the vulnerabilities are as follows:

1) CVE-2021-40155 - A maliciously crafted DWG file in Autodesk Navisworks 2019, 2020, 2021, 2022 can be forced to read beyond allocated boundaries when parsing the DWG files. This vulnerability can be exploited to execute arbitrary code.

2) CVE-2021-40156 - A maliciously crafted DWG file in Autodesk Navisworks 2019, 2020, 2021, 2022 can be forced to write beyond allocated boundaries when parsing the DWG files. This vulnerability can be exploited to execute arbitrary code.

Affected Products

Item

Impacted Versions

Mitigated Versions

Update Source

Autodesk® Navisworks

2019, 2020, 2021, 2022

2022.1

Autodesk Desktop App, or Accounts Portal

*Note: Product list table contents subject to change

Recommendations

Autodesk recommends customers download and install the latest version of Autodesk® Navisworks 2022 Update 1, which is available via the Autodesk Desktop App or Accounts Portal. This version of Autodesk Navisworks includes security updates that address the DWG file vulnerabilities. As a general best practice, we also recommend that customers only open DWG files from trusted sources. More information is available on the Autodesk Navisworks forum page.

A fix will be available for versions of Autodesk® Navisworks 2019-2021 later this year. We will update this advisory as fixes become available. Customers using previous versions of Autodesk® Navisworks that no longer qualify for full support should plan to upgrade to a supported version as soon as possible to avoid downtime and potential security vulnerabilities.

Acknowledgements

We would like to thank the following for reporting the relevant issues and for working with Autodesk to help protect our customers:

  • Michael DePlante (@izobashi) of Trend Micro Zero Day Initiative for reporting CVE-2021-40155 and CVE-2021-40156.

Revision History

Revision

Date

Description

1.0

13/09/2021

Initial Release of the Security Advisory

1.1

27/09/2021

Update to Recommendations

Disclaimer

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© 2021, Autodesk, Inc.

 

 

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