KB5006672: Windows 10 Version 1809 and Windows Server 2019 Security Update (October 2021)

high Nessus Plugin ID 154026
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 affected by multiple vulnerabilities.

Description

The remote Windows host is missing security update 5006672.
It is, therefore, affected by multiple vulnerabilities:

- A security feature bypass vulnerability exists. An attacker can exploit this and bypass the security feature and perform unauthorized actions compromising the integrity of the system/application.
(CVE-2021-40456, CVE-2021-40460, CVE-2021-41337, CVE-2021-41338)

- A denial of service (DoS) vulnerability. An attacker can exploit this issue to cause the affected component to deny system or application services. (CVE-2021-36953, CVE-2021-40463)

- A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2021-36970, CVE-2021-40455, CVE-2021-41361)

- A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-40461, CVE-2021-40462, CVE-2021-40465, CVE-2021-40469, CVE-2021-41330, CVE-2021-41331, CVE-2021-41340, CVE-2021-41342)

- An elevation of privilege vulnerability. An attacker can exploit this to gain elevated privileges.
(CVE-2021-26441, CVE-2021-26442, CVE-2021-40443, CVE-2021-40449, CVE-2021-40450, CVE-2021-40464, CVE-2021-40466, CVE-2021-40467, CVE-2021-40470, CVE-2021-40476, CVE-2021-40477, CVE-2021-40478, CVE-2021-40488, CVE-2021-40489, CVE-2021-41335, CVE-2021-41345, CVE-2021-41347)

- An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2021-38662, CVE-2021-38663, CVE-2021-40454, CVE-2021-40475, CVE-2021-41332, CVE-2021-41343)

Solution

Apply Security Update 5006672

See Also

http://www.nessus.org/u?e54ed946

Plugin Details

Severity: High

ID: 154026

File Name: smb_nt_ms21_oct_5006672.nasl

Version: 1.7

Type: local

Agent: windows

Published: 10/12/2021

Updated: 11/10/2021

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

Risk Information

CVSS Score Source: CVE-2021-41345

VPR

Risk Factor: Critical

Score: 9.8

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

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

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: E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/12/2021

Vulnerability Publication Date: 10/12/2021

Exploitable With

Metasploit (Win32k NtGdiResetDC Use After Free Local Privilege Elevation)

Reference Information

CVE: CVE-2021-26441, CVE-2021-26442, CVE-2021-36953, CVE-2021-36970, CVE-2021-38662, CVE-2021-38663, CVE-2021-40443, CVE-2021-40449, CVE-2021-40450, CVE-2021-40454, CVE-2021-40455, CVE-2021-40456, CVE-2021-40460, CVE-2021-40461, CVE-2021-40462, CVE-2021-40463, CVE-2021-40464, CVE-2021-40465, CVE-2021-40466, CVE-2021-40467, CVE-2021-40469, CVE-2021-40470, CVE-2021-40475, CVE-2021-40476, CVE-2021-40477, CVE-2021-40478, CVE-2021-40488, CVE-2021-40489, CVE-2021-41330, CVE-2021-41331, CVE-2021-41332, CVE-2021-41335, CVE-2021-41337, CVE-2021-41338, CVE-2021-41340, CVE-2021-41342, CVE-2021-41343, CVE-2021-41345, CVE-2021-41347, CVE-2021-41361

MSKB: 5006672

MSFT: MS21-5006672

IAVA: 2021-A-0475, 2021-A-0472