CVE-2021-40155 : What You Need to Know
Learn about CVE-2021-40155, a security flaw in Autodesk Navisworks versions 2019-2022 that allows attackers to execute arbitrary code via crafted DWG files. Find mitigation steps here.
This article provides an overview of CVE-2021-40155, a vulnerability in Autodesk Navisworks that could allow an attacker to execute arbitrary code by exploiting a crafted DWG file.
Understanding CVE-2021-40155
CVE-2021-40155 is a security vulnerability in Autodesk Navisworks versions 2019, 2020, 2021, and 2022 that stems from parsing maliciously crafted DWG files. This flaw could be exploited to trigger arbitrary code execution.
What is CVE-2021-40155?
The vulnerability in Autodesk Navisworks allows a specially crafted DWG file to cause the application to read beyond its allocated boundaries during file parsing, potentially leading to the execution of arbitrary code by an attacker.
The Impact of CVE-2021-40155
If successfully exploited, this vulnerability can enable threat actors to execute arbitrary code on systems running affected versions of Autodesk Navisworks, compromising the confidentiality, integrity, and availability of the application and potentially the entire system.
Technical Details of CVE-2021-40155
CVE-2021-40155 involves the following technical aspects:
Vulnerability Description
The vulnerability is classified as an Out-of-bound Read issue, allowing attackers to read beyond the intended boundaries of the allocated memory when processing malicious DWG files.
Affected Systems and Versions
- Product: Autodesk Navisworks
- Versions affected: 2019, 2020, 2021, 2022
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a DWG file in a specific way that triggers the out-of-bound read condition within Autodesk Navisworks, leading to potential code execution.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-40155, consider the following steps:
Immediate Steps to Take
- Apply official patches provided by Autodesk to fix the vulnerability.
- Avoid opening DWG files from untrusted or unknown sources.
Long-Term Security Practices
- Regularly update Autodesk Navisworks to the latest version to ensure all security patches are applied.
- Educate users on safe file handling practices to prevent the execution of malicious files.
Patching and Updates
Ensure timely installation of security updates and patches released by Autodesk for Navisworks to address known vulnerabilities and enhance the overall security posture of the software.