Detections
Analytics

KB5007255: Windows 8.1 and Windows Server 2012 R2 Security Update (November 2021)

high Nessus Plugin ID 154996

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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: 1.15

Type: local

Agent: windows

Published: 11/9/2021

Updated: 6/17/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

CVSS Score Source: CVE-2021-42285

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.4

Vector: CVSS:3.0/AV:L/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-2021-42283

Vulnerability Information

CPE: cpe:/o:microsoft:windows_8, cpe:/o:microsoft:windows_server_2012:r2

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: 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

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

MSFT: MS21-5007247, MS21-5007255

MSKB: 5007247, 5007255