Detections
Analytics

Security Updates for Microsoft Office Products (May 2021)

high Nessus Plugin ID 149401

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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 remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-28455, CVE-2021-31175, CVE-2021-31176, CVE-2021-31177, CVE-2021-31179, CVE-2021-31180)

 - An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2021-31174, CVE-2021-31178)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Microsoft has released the following security updates to address these issues:
-KB4464542
 -KB4493206
 -KB4493197
 -KB5001920
 -KB5001923
 -KB5001925
 -KB5001927 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

https://support.microsoft.com/en-us/help/4464542

https://support.microsoft.com/en-us/help/4493197

https://support.microsoft.com/en-us/help/4493206

https://support.microsoft.com/en-us/help/5001920

https://support.microsoft.com/en-us/help/5001923

https://support.microsoft.com/en-us/help/5001925

https://support.microsoft.com/en-us/help/5001927

Plugin Details

Severity: High

ID: 149401

File Name: smb_nt_ms21_may_office.nasl

Version: 1.9

Type: local

Agent: windows

Published: 5/11/2021

Updated: 1/2/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-2021-31180

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.2

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

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

CVSS Score Source: CVE-2021-28455

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: 5/11/2021

Vulnerability Publication Date: 5/11/2021

Reference Information

CVE: CVE-2021-28455, CVE-2021-31174, CVE-2021-31175, CVE-2021-31176, CVE-2021-31178, CVE-2021-31179, CVE-2021-31180

IAVA: 2021-A-0225-S

MSFT: MS21-4464542, MS21-4493197, MS21-4493206, MS21-5001920, MS21-5001923, MS21-5001925, MS21-5001927

MSKB: 4464542, 4493197, 4493206, 5001920, 5001923, 5001925, 5001927