CVE-2021-46639 : Exploit Details and Defense Strategies

This CVE involves a vulnerability in Bentley MicroStation CONNECT 10.16.0.80 that enables remote code execution upon interaction with malicious content.

Understanding CVE-2021-46639

This CVE allows attackers to execute arbitrary code on affected Bentley MicroStation CONNECT installations.

What is CVE-2021-46639?

The vulnerability permits remote attackers to trigger code execution on Bentley MicroStation CONNECT 10.16.0.80 via crafted DGN files, exploiting a buffer write flaw.

The Impact of CVE-2021-46639

CVSS Base Score: 7.8 (High Severity)
Attack Vector: Local
User Interaction: Required
Confidentiality, Integrity, and Availability Impact: High

Technical Details of CVE-2021-46639

This section delves into the specifics of the vulnerability within Bentley MicroStation CONNECT 10.16.0.80.

Vulnerability Description

The flaw allows attackers to execute arbitrary code by triggering a buffer write past the allocated buffer's end through crafted DGN files.

Affected Systems and Versions

Product: MicroStation CONNECT
Vendor: Bentley
Affected Version: 10.16.0.80

Exploitation Mechanism

Attackers need user interaction to exploit this vulnerability, requiring targets to access malicious websites or files.

Mitigation and Prevention

Steps to protect systems and prevent exploitation of CVE-2021-46639.

Immediate Steps to Take

Update MicroStation CONNECT to the latest version
Be cautious when visiting unknown websites or opening files

Long-Term Security Practices

Regularly update software and apply security patches
Implement robust security measures to detect and prevent similar vulnerabilities

Patching and Updates

Ensure timely installation of security updates and patches to mitigate the risk of remote code execution.