CVE-2021-34905 : What You Need to Know

This CVE-2021-34905 article provides in-depth information on a vulnerability affecting Bentley View version 10.15.0.75, allowing remote attackers to execute arbitrary code. User interaction is required for exploitation.

Understanding CVE-2021-34905

In this section, we will delve into the details of the CVE-2021-34905 vulnerability.

What is CVE-2021-34905?

CVE-2021-34905 is a vulnerability that permits remote attackers to run arbitrary code on affected installations of Bentley View 10.15.0.75. The flaw originates from inadequate validation of user-supplied data's length before copying it to a heap-based buffer while parsing DGN files.

The Impact of CVE-2021-34905

The vulnerability has a high severity impact, allowing attackers to execute code within the current process. Successful exploitation requires user interaction, such as visiting a malicious webpage or opening a harmful file.

Technical Details of CVE-2021-34905

This section covers the technical specifics of CVE-2021-34905.

Vulnerability Description

CVE-2021-34905 is classified as a CWE-122: Heap-based Buffer Overflow vulnerability, with a CVSS base score of 7.8 (High). The attack complexity is low, and the attack vector is local, while user interaction is required.

Affected Systems and Versions

The vulnerability affects Bentley View version 10.15.0.75 specifically.

Exploitation Mechanism

To exploit this vulnerability, attackers need to trick the target into visiting a malicious page or opening a harmful file.

Mitigation and Prevention

In this section, we'll discuss the steps to mitigate and prevent CVE-2021-34905.

Immediate Steps to Take

Users should refrain from interacting with unknown or suspicious files or links to mitigate the risk of exploitation.

Long-Term Security Practices

Employ robust security practices, such as regular software updates, security patches, and user education to enhance overall security posture.

Patching and Updates

Vendor patches and updates should be promptly applied to address CVE-2021-34905 and prevent potential exploitation.