KB5007215: Windows 11 Security Updates (November 2021)

critical Nessus Plugin ID 154997

Synopsis

The Windows 11 installation on the remote host is affected by multiple vulnerabilities.

Description

The Windows 11 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

- A denial of service (DoS) vulnerability. An attacker can exploit this issue to cause the affected component to deny system or application services. (CVE-2021-41356, CVE-2021-42274, CVE-2021-42284)

- A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-26443, CVE-2021-38666, CVE-2021-41378, CVE-2021-42276, CVE-2021-42279)

- An elevation of privilege vulnerability. An attacker can exploit this to gain elevated privileges.
(CVE-2021-36957, CVE-2021-41366, CVE-2021-41367, CVE-2021-41370, CVE-2021-41377, CVE-2021-41379, CVE-2021-42277, CVE-2021-42280, CVE-2021-42283, CVE-2021-42285)

- An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2021-38631, CVE-2021-38665, CVE-2021-41371)

Solution

Microsoft has released KB5007215 to address this issue.

See Also

https://support.microsoft.com/en-us/help/5007215

Plugin Details

Severity: Critical

ID: 154997

File Name: smb_nt_ms21_nov_5007215.nasl

Version: 1.12

Type: local

Agent: windows

Published: 11/9/2021

Updated: 6/17/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.8

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7.8

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

CVSS Score Source: CVE-2021-34527

CVSS v3

Risk Factor: Critical

Base Score: 9

Temporal Score: 8.6

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

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

CVSS Score Source: CVE-2021-26443

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: 11/9/2021

Vulnerability Publication Date: 11/9/2021

CISA Known Exploited Vulnerability Due Dates: 7/20/2021, 3/17/2022

Exploitable With

CANVAS (CANVAS)

Core Impact

Reference Information

CVE: CVE-2021-26443, CVE-2021-34527, CVE-2021-36957, CVE-2021-38631, CVE-2021-38665, CVE-2021-38666, CVE-2021-41351, CVE-2021-41356, CVE-2021-41366, CVE-2021-41367, CVE-2021-41370, CVE-2021-41371, CVE-2021-41377, CVE-2021-41378, CVE-2021-41379, CVE-2021-42274, CVE-2021-42276, CVE-2021-42277, CVE-2021-42279, CVE-2021-42280, CVE-2021-42283, CVE-2021-42284, CVE-2021-42285

IAVA: 2021-A-0539-S, 2021-A-0544-S, 2021-A-0545-S

MSFT: MS21-5007215

MSKB: 5007215