Detections
Analytics

Security Updates for Microsoft Excel Products (May 2021)

high Nessus Plugin ID 149397

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Synopsis

The Microsoft Excel Products are affected by multiple vulnerabilities.

Description

The Microsoft Excel 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-2021-31175, 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:
-KB5001918
 -KB5001936

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?354a1fb3

http://www.nessus.org/u?1df6f8ba

Plugin Details

Severity: High

ID: 149397

File Name: smb_nt_ms21_may_excel.nasl

Version: 1.7

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:excel

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-0228-S

MSFT: MS21-5001918, MS21-5001936

MSKB: 5001918, 5001936