Intel Microcode Updates for Windows 10 / Windows Server 2016 / Windows Server 2019 (May 2019) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout)

medium Nessus Plugin ID 125149
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote Windows host is missing a microcode update.

Description

The remote Windows host is missing a security update. It is, therefore, missing microcode updates to address the following vulnerabilities:

- Microarchitectural Data Sampling Uncacheable Memory (MDSUM) (CVE-2019-11091)
- Microarchitectural Store Buffer Data Sampling (MSBDS) (CVE-2018-12126)
- Microarchitectural Load Port Data Sampling (MLPDS) (CVE-2018-12127)
- Microarchitectural Fill Buffer Data Sampling (MFBDS) (CVE-2018-12130)

Note that Nessus did not actually test for these flaws nor checked the target processor architecture but instead, has relied on the version of mcupdate_GenuineIntel.dll to be latest for supported Windows release.

Solution

Microsoft has released security updates for Windows 10, Windows Server 2016 and Windows Server 2019.

See Also

http://www.nessus.org/u?d6715877

http://www.nessus.org/u?9c600e5d

http://www.nessus.org/u?16fb167c

http://www.nessus.org/u?bc221b4a

http://www.nessus.org/u?f1b3721e

http://www.nessus.org/u?8c467280

Plugin Details

Severity: Medium

ID: 125149

File Name: smb_nt_ms19_may_microcode.nasl

Version: 1.7

Type: local

Agent: windows

Published: 5/15/2019

Updated: 3/19/2021

Dependencies: smb_check_rollup.nasl, smb_hotfixes.nasl, ms_bulletin_checks_possible.nasl, enumerate_ms_azure_vm_win.nbin

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2018-12126

VPR

Risk Factor: High

Score: 7.7

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.5

Vector: AV:L/AC:M/Au:N/C:C/I:N/A:N

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.9

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

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

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/MS_Bulletin_Checks/Possible, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 5/14/2019

Vulnerability Publication Date: 5/14/2019

Reference Information

CVE: CVE-2019-11091, CVE-2018-12126, CVE-2018-12127, CVE-2018-12130

BID: 108330

MSKB: 4494175, 4494452, 4494453, 4494454, 4497165

MSFT: MS19-4494175, MS19-4494452, MS19-4494453, MS19-4494454, MS19-4497165