CVE-2021-46634 : Exploit Details and Defense Strategies

A vulnerability in Bentley MicroStation CONNECT 10.16.0.80 allows remote attackers to execute arbitrary code, impacting confidentiality, integrity, and availability.

Understanding CVE-2021-46634

This CVE involves a critical vulnerability in Bentley MicroStation CONNECT 10.16.0.80 that could lead to remote code execution.

What is CVE-2021-46634?

The vulnerability in Bentley MicroStation CONNECT 10.16.0.80 enables attackers to execute arbitrary code by exploiting a flaw in parsing JT files, requiring user interaction.

The Impact of CVE-2021-46634

The vulnerability has a high impact, affecting confidentiality, integrity, and availability. Attackers can trigger a buffer overflow to execute code within the current process.

Technical Details of CVE-2021-46634

This section provides technical insights into the CVE.

Vulnerability Description

The specific flaw lies in the parsing of JT files, allowing attackers to write past allocated buffers, leading to remote code execution.

Affected Systems and Versions

Product: MicroStation CONNECT
Vendor: Bentley
Version: 10.16.0.80

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
User Interaction: Required
Privileges Required: None
Scope: Unchanged
Availability Impact: High
Confidentiality Impact: High
Integrity Impact: High

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2021-46634.

Immediate Steps to Take

Update Bentley MicroStation CONNECT to a patched version immediately.
Avoid visiting suspicious or untrusted websites.
Exercise caution when opening files from unknown sources.

Long-Term Security Practices

Regularly update software and firmware to latest versions.
Implement network segmentation to isolate critical systems.
Conduct regular security training for employees.

Patching and Updates

Bentley may release patches to address the vulnerability. Stay informed about security updates from the vendor.