Detections
Analytics

Security Updates for Microsoft Office Web Apps (June 2021)

high Nessus Plugin ID 150358

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Synopsis

The Microsoft Office Web Apps installation on the remote host is affected by multiple vulnerabilities.

Description

The Microsoft Office Web Apps installation on the remote host is missing security updates. It is, therefore, affected by a remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-31939)

Solution

Microsoft has released the following security updates to address this issue:
-KB5001943
 -KB5001956

See Also

http://www.nessus.org/u?80cb3bac

http://www.nessus.org/u?4c4e4df7

Plugin Details

Severity: High

ID: 150358

File Name: smb_nt_ms21_june_office_web.nasl

Version: 1.5

Type: local

Agent: windows

Published: 6/8/2021

Updated: 12/27/2023

Supported Sensors: Nessus Agent, 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-2021-31939

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_web_apps

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/8/2021

Vulnerability Publication Date: 6/8/2021

Reference Information

CVE: CVE-2021-31939

IAVA: 2021-A-0275-S

MSFT: MS21-5001943, MS21-5001956

MSKB: 5001943, 5001956