Detections
Analytics

Security Updates for Microsoft Office Products (September 2021)

high Nessus Plugin ID 153387

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Synopsis

The Microsoft Office Products are affected by multiple vulnerabilities.

Description

The Microsoft Office Products are missing security updates. It is, therefore, affected by multiple vulnerabilities:

 - A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2021-38650)

 - A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-38646, CVE-2021-38655, CVE-2021-38658, CVE-2021-38659, CVE-2021-38660)

 - An information disclosure vulnerability in the graphics component. An attacker can exploit this to disclose sensitive information. (CVE-2021-38657)

Solution

Microsoft has released the following security updates to address this issue:
-KB4484103
 -KB4484108
 -KB5001958
 -KB5001997
 -KB5002005
 -KB5002007

For Office 365, Office 2016 C2R, or Office 2019, ensure automatic updates are enabled or open any office app and manually perform an update.

See Also

http://www.nessus.org/u?7e88251c

http://www.nessus.org/u?9165ee58

http://www.nessus.org/u?bb69974a

http://www.nessus.org/u?babcfa70

http://www.nessus.org/u?3116725f

http://www.nessus.org/u?2e7bac28

http://www.nessus.org/u?42ab6861

http://www.nessus.org/u?fd4508ff

Plugin Details

Severity: High

ID: 153387

File Name: smb_nt_ms21_sep_office.nasl

Version: 1.8

Type: local

Agent: windows

Published: 9/14/2021

Updated: 4/25/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.6

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

CVSS Score Source: CVE-2021-38660

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.2

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

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:office

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/14/2021

Vulnerability Publication Date: 9/14/2021

CISA Known Exploited Vulnerability Due Dates: 4/18/2022

Reference Information

CVE: CVE-2021-38646, CVE-2021-38650, CVE-2021-38655, CVE-2021-38657, CVE-2021-38658, CVE-2021-38659, CVE-2021-38660

IAVA: 2021-A-0425-S, 2021-A-0428-S

MSFT: MS21-4484103, MS21-4484108, MS21-5001958, MS21-5001997, MS21-5002005, MS21-5002007

MSKB: 4484103, 4484108, 5001958, 5001997, 5002005, 5002007