CVE-2020-7261 Explained : Impact and Mitigation

A Buffer Overflow vulnerability in McAfee Endpoint Security (ENS) allows local users to disable Endpoint Security via crafted user input.

Understanding CVE-2020-7261

This CVE involves a Buffer Overflow vulnerability in the AMSI component of McAfee Endpoint Security (ENS) that could be exploited by local users.

What is CVE-2020-7261?

The vulnerability allows local users to disable Endpoint Security by exploiting a Buffer Overflow via Environment Variables in the AMSI component of McAfee ENS.

The Impact of CVE-2020-7261

The vulnerability has a CVSS base score of 6.1, indicating a medium severity issue with high confidentiality impact and low integrity impact.

Technical Details of CVE-2020-7261

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability is due to a Buffer Overflow via Environment Variables in the AMSI component of McAfee ENS, allowing local users to disable Endpoint Security.

Affected Systems and Versions

Product: McAfee Endpoint Security (ENS)
Vendor: McAfee LLC
Versions Affected: Prior to 10.7.0 February 2020 Update

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Local
Privileges Required: Low
User Interaction: Required
Scope: Changed
Vector String: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N

Mitigation and Prevention

Steps to address and prevent the CVE-2020-7261 vulnerability.

Immediate Steps to Take

Apply the latest security updates from McAfee to patch the vulnerability.
Monitor for any unusual user activities that could indicate exploitation.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access.
Conduct regular security training for users to recognize and report suspicious activities.

Patching and Updates

Regularly update McAfee Endpoint Security to the latest version to mitigate known vulnerabilities.