CVE-2023-3665 : What You Need to Know

A code injection vulnerability in Trellix ENS 10.7.0 April 2023 release and earlier versions has been identified, which allows a local user to disable the ENS AMSI component via environment variables. This vulnerability can lead to denial of service and/or the execution of arbitrary code.

Understanding CVE-2023-3665

This section provides detailed insights into the CVE-2023-3665 vulnerability.

What is CVE-2023-3665?

CVE-2023-3665 is a code injection vulnerability in Trellix ENS 10.7.0 April 2023 release and earlier versions, allowing a local user to disable the ENS AMSI component via environment variables, leading to potential denial of service and arbitrary code execution.

The Impact of CVE-2023-3665

The impact of CVE-2023-3665 is categorized under CAPEC-549, signifying local execution of code. This vulnerability poses a medium-severity risk with an integrity impact rated as high.

Technical Details of CVE-2023-3665

This section delves into the technical aspects of CVE-2023-3665.

Vulnerability Description

The vulnerability arises due to improper neutralization of special elements in output used by a downstream component ('Injection'), specifically in the ENS AMSI component, allowing a local user to manipulate environment variables and potentially execute arbitrary code.

Affected Systems and Versions

Trellix Endpoint Security version 10.7.0 and earlier releases, including the April 2023 version, are affected by this vulnerability.

Exploitation Mechanism

The exploitation of this vulnerability involves a local user manipulating environment variables to disable the ENS AMSI component, which can result in denial of service and unauthorized code execution.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-3665, the following steps can be taken.

Immediate Steps to Take

Update Trellix Endpoint Security to a patched version that addresses the vulnerability.
Implement access controls to limit local user privileges and access to critical system components.

Long-Term Security Practices

Regularly monitor security advisories and updates from Trellix to stay informed about potential vulnerabilities and patches.
Conduct regular security audits and penetration testing to identify and address any security gaps in the system.

Patching and Updates

Ensure timely installation of security patches and updates released by Trellix to fix the code injection vulnerability in Trellix ENS 10.7.0 and earlier versions. Regularly check for updates and apply them promptly to enhance system security and protect against exploitation of this vulnerability.