CVE-2021-31843 : Security Advisory and Response
Discover the high-severity CVE-2021-31843 affecting McAfee Endpoint Security for Windows. Learn how improper privileges management could lead to unauthorized file access by local users.
A vulnerability labeled CVE-2021-31843 has been identified in McAfee Endpoint Security for Windows that could potentially allow local users to gain unauthorized access to files on the system. This vulnerability arises from improper privileges management within the software. Below are more details regarding this CVE.
Understanding CVE-2021-31843
This section provides insights into the nature of the vulnerability and its potential impacts.
What is CVE-2021-31843?
The vulnerability in McAfee Endpoint Security for Windows, prior to version 10.7.0 September 2021 Update, enables local users to manipulate junction links, leading to unauthorized access to files.
The Impact of CVE-2021-31843
With a CVSS base score of 7.3, this vulnerability has a high severity rating affecting confidentiality, integrity, and availability. It requires low privileges and local access to exploit, making it significant.
Technical Details of CVE-2021-31843
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
An improper privileges management vulnerability allows unauthorized access to files by redirecting McAfee folder operations through manipulated junction links.
Affected Systems and Versions
McAfee Endpoint Security (ENS) for Windows versions prior to 10.7.0 September 2021 Update are affected by this vulnerability.
Exploitation Mechanism
Local users can exploit this vulnerability by manipulating junction links to redirect McAfee folder operations, granting them unauthorized access to files.
Mitigation and Prevention
To address CVE-2021-31843, immediate and long-term preventive measures should be taken.
Immediate Steps to Take
Users are advised to update McAfee Endpoint Security to version 10.7.0 September 2021 Update or later to mitigate the risk posed by this vulnerability.
Long-Term Security Practices
Implementing the principle of least privilege and regularly monitoring file access can bolster overall security posture.
Patching and Updates
Regularly applying security patches and updates to McAfee Endpoint Security ensures that known vulnerabilities are remediated effectively.