KB5005095: Windows Server 2008 Security Update (August 2021)

critical Nessus Plugin ID 152425

Synopsis

The remote Windows host is affected by multiple vulnerabilities.

Description

The remote Windows host is missing security update 5005095 or cumulative update 5005090. It is, therefore, affected by multiple vulnerabilities :

- A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-26424, CVE-2021-34533, CVE-2021-36936, CVE-2021-36937, CVE-2021-36947)

- A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2021-36942)

- An elevation of privilege vulnerability. An attacker can exploit this to gain elevated privileges.
(CVE-2021-26425, CVE-2021-34483, CVE-2021-34484, CVE-2021-36927)

Solution

Apply Security Only update KB5005095 or Cumulative Update KB5005090.

See Also

http://www.nessus.org/u?de72daa6

http://www.nessus.org/u?910509c6

Plugin Details

Severity: Critical

ID: 152425

File Name: smb_nt_ms21_aug_5005095.nasl

Version: 1.9

Type: local

Agent: windows

Published: 8/10/2021

Updated: 4/7/2022

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.6

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

CVSS Score Source: CVE-2021-36936

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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: 8/10/2021

Vulnerability Publication Date: 8/10/2021

CISA Known Exploited Dates: 11/17/2021, 4/21/2022

Reference Information

CVE: CVE-2021-26424, CVE-2021-26425, CVE-2021-34481, CVE-2021-34483, CVE-2021-34484, CVE-2021-34533, CVE-2021-36927, CVE-2021-36936, CVE-2021-36937, CVE-2021-36942, CVE-2021-36947

MSKB: 5005095, 5005090

MSFT: MS21-5005095, MS21-5005090

IAVA: 2021-A-0373-S, 2021-A-0374-S