CVE-2021-27045 : What You Need to Know

A maliciously crafted PDF file in Autodesk Navisworks 2019, 2020, 2021, 2022 can be forced to read beyond allocated boundaries when parsing the PDF file. This vulnerability can be exploited to execute arbitrary code.

Understanding CVE-2021-27045

This CVE relates to a security vulnerability affecting Autodesk Navisworks versions 2019, 2020, 2021, and 2022, allowing an attacker to execute arbitrary code by exploiting an out-of-bound read issue in the software.

What is CVE-2021-27045?

The CVE-2021-27045 vulnerability involves a maliciously constructed PDF file that, when parsed by Autodesk Navisworks, can lead to a situation where the software reads beyond the allocated memory boundaries. This can be leveraged by an attacker to execute arbitrary code on the affected system.

The Impact of CVE-2021-27045

Exploiting this vulnerability can result in unauthorized execution of code on the system running the affected Autodesk Navisworks versions. This could lead to a complete compromise of the system and potential access to sensitive information.

Technical Details of CVE-2021-27045

This section delves into the specific technical aspects of the CVE-2021-27045 vulnerability.

Vulnerability Description

The vulnerability arises from a flaw in how Autodesk Navisworks handles PDF files, allowing an out-of-bound read which can be maliciously triggered through a specially crafted PDF file.

Affected Systems and Versions

Autodesk Navisworks versions 2019, 2020, 2021, and 2022 are confirmed to be affected by this vulnerability. Users of these versions are at risk of exploitation if they come into contact with a malicious PDF file.

Exploitation Mechanism

By manipulating a PDF file to force Autodesk Navisworks to read beyond its memory boundaries, an attacker can inject and execute arbitrary code on the targeted system.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-27045, users and organizations can take the following steps:

Immediate Steps to Take

Update Autodesk Navisworks to the latest version that contains a patch for the vulnerability.
Exercise caution when handling PDF files, especially those from untrusted sources.

Long-Term Security Practices

Regularly update software and systems to ensure they are protected against known vulnerabilities.
Implement network security measures to detect and block potentially malicious activities.

Patching and Updates

Staying informed about security advisories from Autodesk and promptly applying patches or updates is crucial to safeguarding systems against known vulnerabilities.