KB5007255: Windows Server 2012 R2 Security Update (November 2021)

high Nessus Plugin ID 154996

Synopsis

The remote Windows host is affected by multiple vulnerabilities.

Description

The remote Windows host is missing security update 5007255 or cumulative update 5007247. 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-2021-42284)

- An elevation of privilege vulnerability. An attacker can exploit this to gain elevated privileges.
(CVE-2021-41366, CVE-2021-41367, CVE-2021-41370, CVE-2021-41377, CVE-2021-41379, CVE-2021-42278, CVE-2021-42282, CVE-2021-42283, CVE-2021-42285, CVE-2021-42287, CVE-2021-42291)

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

- A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-38666, CVE-2021-42275)

Solution

Apply Security Only update KB5007255 or Cumulative Update 5007247.

See Also

https://support.microsoft.com/en-us/help/5007255

https://support.microsoft.com/en-us/help/5007247

Plugin Details

Severity: High

ID: 154996

File Name: smb_nt_ms21_nov_5007255.nasl

Version: 1.11

Type: local

Agent: windows

Published: 11/9/2021

Updated: 5/9/2022

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

Risk Information

CVSS Score Source: CVE-2021-42285

VPR

Risk Factor: Critical

Score: 9.7

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: 8.8

Temporal Score: 8.4

Vector: CVSS:3.0/AV:N/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: 11/9/2021

Vulnerability Publication Date: 11/9/2021

CISA Known Exploited Dates: 3/17/2022, 5/2/2022

Reference Information

CVE: CVE-2021-38631, CVE-2021-38665, CVE-2021-38666, CVE-2021-41366, CVE-2021-41367, CVE-2021-41370, CVE-2021-41371, CVE-2021-41377, CVE-2021-41379, CVE-2021-42275, CVE-2021-42278, CVE-2021-42282, CVE-2021-42283, CVE-2021-42284, CVE-2021-42285, CVE-2021-42287, CVE-2021-42291

MSKB: 5007255, 5007247

MSFT: MS21-5007255, MS21-5007247

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