CVE-2021-46635 : What You Need to Know

This CVE-2021-46635 article provides details about a vulnerability in Bentley MicroStation CONNECT 10.16.0.80 allowing remote code execution and its impact, technical aspects, and mitigation steps.

Understanding CVE-2021-46635

CVE-2021-46635 is a vulnerability in Bentley MicroStation CONNECT 10.16.0.80 that could allow an attacker to execute arbitrary code remotely.

What is CVE-2021-46635?

This vulnerability permits remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. It requires user interaction such as visiting a malicious page or opening a malicious file, triggered by crafted data in DGN files.

The Impact of CVE-2021-46635

CVSS Score: 7.8 (High Severity)
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
Attack Complexity: Low
Attack Vector: Local
Privileges Required: None
User Interaction: Required
Vector String: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Technical Details of CVE-2021-46635

This section covers the technical aspects of the vulnerability.

Vulnerability Description

The flaw lies in the parsing of DGN files, where crafted data can lead to a write past the end of a buffer, enabling code execution within the current process.

Affected Systems and Versions

Product: MicroStation CONNECT
Vendor: Bentley
Version: 10.16.0.80

Exploitation Mechanism

The vulnerability requires user interaction to exploit, commonly through visiting a malicious webpage or opening a malicious file.

Mitigation and Prevention

Mitigation strategies against CVE-2021-46635.

Immediate Steps to Take

Patch the affected systems promptly.
Educate users about the risks of visiting unknown websites or opening suspicious files.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Employ robust cybersecurity measures to detect and prevent malicious activities.
Regularly update software and security patches on all systems.

Patching and Updates

Ensure timely installation of software updates and security patches to address vulnerabilities like CVE-2021-46635.