KB4601331: Windows 10 February 2021 Security Update

critical Nessus Plugin ID 146335
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 4601331.
It is, therefore, affected by multiple vulnerabilities :

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

- 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)

- 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-2021-24081, CVE-2021-24083, CVE-2021-24088, CVE-2021-24091, CVE-2021-24094)

- 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)

Solution

Apply Cumulative Update KB4601331.

See Also

http://www.nessus.org/u?8b24a2ba

Plugin Details

Severity: Critical

ID: 146335

File Name: smb_nt_ms21_feb_4601331.nasl

Version: 1.6

Type: local

Agent: windows

Published: 2/9/2021

Updated: 6/3/2021

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

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-2021-24079, CVE-2021-24080, CVE-2021-24081, CVE-2021-24083, CVE-2021-24086, CVE-2021-24088, CVE-2021-24091, CVE-2021-24094, CVE-2021-24102, CVE-2021-24103, CVE-2021-25195

MSKB: 4601331

MSFT: MS21-4601331

IAVA: 2021-A-0072-S, 2021-A-0093-S