Security Update for Windows Defender (January 2021)

high Nessus Plugin ID 144876

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Synopsis

An antimalware application installed on the remote host is affected by a remote code execution vulnerability.

Description

The Malware Protection Engine version of Microsoft Windows Defender installed on the remote Windows host is prior to 1.1.17600.5. It is, therefore, affected by an unspecified remote code execution vulnerability. An authenticated, local attacker can exploit this to bypass authentication and execute arbitrary code with administrator privileges.

Solution

Enable automatic updates to update the malware engine for the relevant antimalware applications. Refer to Knowledge Base Article 2510781 for information on how to verify that MMPE has been updated.

Plugin Details

Severity: High

ID: 144876

File Name: smb_nt_ms21_jan_win_defender.nasl

Version: 1.8

Type: local

Agent: windows

Family: Windows

Published: 1/12/2021

Updated: 12/7/2022

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2021-1647

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:microsoft:windows, cpe:/a:microsoft:windows_defender

Required KB Items: SMB/Registry/Enumerated, SMB/svcs

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/12/2021

Vulnerability Publication Date: 1/12/2021

CISA Known Exploited Vulnerability Due Dates: 11/17/2021

Reference Information

CVE: CVE-2021-1647

Detections

Analytics