Detections
Analytics

Security Updates for Microsoft Office Online Server and Microsoft Office Web Apps (March 2021)

high Nessus Plugin ID 147638

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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 multiple vulnerabilities:

 - A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-27053, CVE-2021-27054, CVE-2021-27057)

Solution

Microsoft has released the following security updates to address this issue:
-KB4493229
 -KB4493234

See Also

https://support.microsoft.com/en-us/help/4493229

https://support.microsoft.com/en-us/help/4493234

Plugin Details

Severity: High

ID: 147638

File Name: smb_nt_ms21_mar_office_web.nasl

Version: 1.3

Type: local

Agent: windows

Published: 3/10/2021

Updated: 3/17/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2021-27057

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:office_web_apps

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 3/9/2021

Vulnerability Publication Date: 3/9/2021

Reference Information

CVE: CVE-2021-27053, CVE-2021-27054, CVE-2021-27057

MSFT: MS21-4493229, MS21-4493234

MSKB: 4493229, 4493234