CVE-2021-46606 Explained : Impact and Mitigation

A vulnerability in Bentley MicroStation CONNECT allows remote attackers to execute arbitrary code.

Understanding CVE-2021-46606

What is CVE-2021-46606?

This vulnerability enables remote attackers to run arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80, requiring user interaction through visiting a malicious page or opening a harmful file. The issue lies in BMP image parsing, lacking validation of user-supplied data length.

The Impact of CVE-2021-46606

The vulnerability has a CVSS 3.0 base score of 7.8, with high impacts on confidentiality, integrity, and availability. Attack complexity is low, with no privileges required.

Technical Details of CVE-2021-46606

Vulnerability Description

The flaw involves a heap-based buffer overflow due to improper validation of user-supplied data length, allowing code execution within the current process.

Affected Systems and Versions

Product: MicroStation CONNECT
Vendor: Bentley
Version: 10.16.0.80

Exploitation Mechanism

Attackers can exploit the vulnerability by manipulating BMP images, tricking users into visiting malicious pages or opening harmful files.

Mitigation and Prevention

Immediate Steps to Take

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

Long-Term Security Practices

Implement regular security training for users to recognize phishing attempts.
Employ network segmentation to limit the impact of potential breaches.

Patching and Updates

Apply security patches promptly to ensure protection against known vulnerabilities.