CVE-2021-34931 Explained : Impact and Mitigation

This CVE-2021-34931 article provides detailed information about a vulnerability found in Bentley View version 10.15.0.75, allowing remote attackers to execute arbitrary code. User interaction is required to exploit this flaw, making it critical for affected users to take immediate action.

Understanding CVE-2021-34931

This section delves into the specifics of the CVE-2021-34931 vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-34931?

CVE-2021-34931 is a vulnerability that enables remote attackers to execute arbitrary code on systems running Bentley View 10.15.0.75. The flaw lies in how JT files are parsed, allowing attackers to exploit the lack of object validation.

The Impact of CVE-2021-34931

The impact of CVE-2021-34931 is severe, with a CVSS base score of 7.8 out of 10. Attackers can execute code in the context of the current process, leading to high confidentiality, integrity, and availability impacts.

Technical Details of CVE-2021-34931

In this section, we explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability arises from the parsing of JT files, specifically due to the lack of validating an object before operations are performed. This allows attackers to execute arbitrary code on affected systems.

Affected Systems and Versions

Bentley View version 10.15.0.75 is affected by CVE-2021-34931, making systems running this version vulnerable to remote code execution.

Exploitation Mechanism

To exploit CVE-2021-34931, attackers need to lure a user to visit a malicious page or open a malicious file, leveraging the parsing flaw in JT files to execute arbitrary code.

Mitigation and Prevention

This section outlines steps to take immediately and long-term security practices to mitigate the risks associated with CVE-2021-34931.

Immediate Steps to Take

Users are advised to update Bentley View to a patched version, avoid opening suspicious files or visiting untrusted websites, and consider implementing additional security measures.

Long-Term Security Practices

To enhance overall security posture, users should regularly update software, educate users on safe browsing practices, and maintain a reliable backup system.

Patching and Updates

Bentley has released patches to address CVE-2021-34931. Users should apply the latest updates promptly to protect their systems from potential exploits.