Detections
Analytics

Security Updates for Microsoft Office Web Apps (May 2021)

high Nessus Plugin ID 149387

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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-2021-31175, CVE-2021-31177, CVE-2021-31179)

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

Solution

Microsoft has released the following security updates to address this issue:
-KB5001914
 -KB5001928

See Also

http://www.nessus.org/u?3ef32b8b

http://www.nessus.org/u?97b40ee7

Plugin Details

Severity: High

ID: 149387

File Name: smb_nt_ms21_may_office_web.nasl

Version: 1.5

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-2021-31179

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: 5/11/2021

Vulnerability Publication Date: 5/11/2021

Reference Information

CVE: CVE-2021-31174, CVE-2021-31175, CVE-2021-31177, CVE-2021-31178, CVE-2021-31179

IAVA: 2021-A-0225-S

MSFT: MS21-5001914, MS21-5001928

MSKB: 5001914, 5001928