CVE-2021-23878 : Security Advisory and Response

A vulnerability has been identified in McAfee Endpoint Security for Windows that could allow a local user to access sensitive information in memory, impacting versions prior to 10.7.0 February 2021.

Understanding CVE-2021-23878

This CVE discloses a clear text storage vulnerability that could lead to unauthorized access to sensitive data within the McAfee security software.

What is CVE-2021-23878?

The vulnerability allows a local user to view ENS settings and credentials by accessing process memory after specific actions are performed by the ENS administrator. The user must access the memory location immediately after an administrator configures changes through the console.

The Impact of CVE-2021-23878

With a CVSS base score of 7.3, this high severity vulnerability can have a significant impact on confidentiality, integrity, and availability of the affected systems. The attack complexity is low, but the exploit requires local access and user interaction.

Technical Details of CVE-2021-23878

This section covers the specific technical aspects of the vulnerability.

Vulnerability Description

The vulnerability involves clear text storage of sensitive information, allowing unauthorized access to ENS settings and credentials.

Affected Systems and Versions

McAfee Endpoint Security (ENS) for Windows versions prior to 10.7.0 February 2021 are impacted by the vulnerability.

Exploitation Mechanism

A local user can exploit the vulnerability by accessing process memory immediately after an ENS administrator makes configuration changes through the console.

Mitigation and Prevention

To secure systems against CVE-2021-23878, immediate steps and long-term security practices should be implemented.

Immediate Steps to Take

Update McAfee Endpoint Security to version 10.7.0 February 2021 or later.
Monitor system logs for any unauthorized access attempts.

Long-Term Security Practices

Regularly review and update security configurations.
Restrict access to memory and sensitive system information.

Patching and Updates

Apply all security patches and updates provided by McAfee to address known vulnerabilities.