CVE-2021-4038 : Security Advisory and Response

A detailed overview of the Cross Site Scripting (XSS) vulnerability in McAfee Network Security Manager (NSM) prior to version 10.7 M7.

Understanding CVE-2021-4038

This CVE identifies a Cross Site Scripting (XSS) vulnerability in McAfee Network Security Manager (NSM).

What is CVE-2021-4038?

CVE-2021-4038 highlights a security issue in NSM that allows a remote authenticated administrator to embed XSS via specially crafted custom rules containing HTML.

The Impact of CVE-2021-4038

The vulnerability in NSM could lead to the execution of malicious scripts by attackers, compromising the confidentiality and integrity of the system.

Technical Details of CVE-2021-4038

This section delves into the specifics of the vulnerability.

Vulnerability Description

The flaw enables malicious code injection by authenticated attackers through custom rules, potentially leading to XSS attacks within the administrator interface.

Affected Systems and Versions

McAfee Network Security Manager versions prior to 10.7 M7 are impacted by this vulnerability.

Exploitation Mechanism

Attackers with high privileges can exploit the XSS vulnerability by crafting malicious custom rules containing HTML.

Mitigation and Prevention

Discover the steps to mitigate the risks associated with CVE-2021-4038.

Immediate Steps to Take

Administrators should update NSM to version 10.7 M7 or later to patch the XSS vulnerability and prevent exploitation.

Long-Term Security Practices

Regularly monitor security advisories from McAfee and implement secure coding practices to mitigate XSS risks.

Patching and Updates

Ensure timely installation of vendor-released security patches and updates to protect NSM from known vulnerabilities.