Microsoft Defender Elevation of Privilege Vulnerability (CVE-2019-1161)

high Nessus Plugin ID 127910

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Synopsis

An antimalware application installed on the remote host is affected by an elevation of privilege vulnerability.

Description

The version of Microsoft Malware Protection Signature Update Stub (MpSigStub.exe) installed on the remote Windows host is prior to 1.1.16200.1. It is, therefore, affected by a elevation of privilege vulnerability which could allow an attacker who successfully exploited this vulnerability to elevate privileges on the system.

Solution

Enable automatic updates to update the scan engine for the relevant antimalware applications or refer to the security guidance for this CVE if Defender is in a disabled state. Refer to Knowledge Base Article 2510781 for information on how to verify that MMPE has been updated.

Plugin Details

Severity: High

ID: 127910

File Name: microsoft_defender_mpsigstub_1_1_16200_1.nasl

Version: 1.4

Type: local

Agent: windows

Family: Windows

Published: 8/16/2019

Updated: 9/2/2020

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 4.9

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

CVSS Score Source: CVE-2019-1161

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

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

Required KB Items: SMB/Registry/Enumerated

Exploit Ease: No known exploits are available

Patch Publication Date: 8/13/2019

Vulnerability Publication Date: 8/13/2019

Reference Information

CVE: CVE-2019-1161

IAVA: 2019-A-0294

Detections

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