KB4601349: Windows 8.1 and Windows Server 2012 R2 February 2021 Security Update

critical Nessus Plugin ID 146341

Synopsis

The remote Windows host is affected by multiple vulnerabilities.

Description

The remote Windows host is missing security update 4601349 or cumulative update 4601384. 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-2021-24080, CVE-2021-24086)

- An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2021-1734, CVE-2021-24076, CVE-2021-24079)

- A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-1722, CVE-2021-24074, CVE-2021-24077, CVE-2021-24078, CVE-2021-24083, CVE-2021-24088, CVE-2021-24094)

- An elevation of privilege vulnerability. An attacker can exploit this to gain elevated privileges.
(CVE-2021-1727, CVE-2021-24102, CVE-2021-24103, CVE-2021-25195)

Solution

Apply Security Only update KB4601349 or Cumulative Update KB4601384.

See Also

http://www.nessus.org/u?922030bd

http://www.nessus.org/u?04a48a8a

Plugin Details

Severity: Critical

ID: 146341

File Name: smb_nt_ms21_feb_4601384.nasl

Version: 1.6

Type: local

Agent: windows

Published: 2/9/2021

Updated: 7/19/2021

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

Risk Information

CVSS Score Source: CVE-2021-24094

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

Temporal Vector: E:P/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: 2/9/2021

Vulnerability Publication Date: 2/9/2021

Reference Information

CVE: CVE-2021-1722, CVE-2021-1727, CVE-2021-1734, CVE-2021-24074, CVE-2021-24076, CVE-2021-24077, CVE-2021-24078, CVE-2021-24079, CVE-2021-24080, CVE-2021-24083, CVE-2021-24086, CVE-2021-24088, CVE-2021-24094, CVE-2021-24102, CVE-2021-24103, CVE-2021-25195

MSKB: 4601349, 4601384

MSFT: MS21-4601349, MS21-4601384