Security Updates for Microsoft Excel Products (April 2021)

high Nessus Plugin ID 148470

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 :

- Microsoft Office Remote Code Execution Vulnerability (CVE-2021-28449)

- Microsoft Excel Remote Code Execution Vulnerability (CVE-2021-28451, CVE-2021-28454, CVE-2021-28456) Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Microsoft has released the following security updates to address this issue:
-KB3017810
-KB4504721
-KB4504735 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/3017810

https://support.microsoft.com/en-us/help/4504721

https://support.microsoft.com/en-us/help/4504735

Plugin Details

Severity: High

ID: 148470

File Name: smb_nt_ms21_apr_excel.nasl

Version: 1.7

Type: local

Agent: windows

Published: 4/13/2021

Updated: 1/4/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2021-28454

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:excel

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 4/13/2021

Vulnerability Publication Date: 4/13/2021

Reference Information

CVE: CVE-2021-28449, CVE-2021-28451, CVE-2021-28454, CVE-2021-28456

IAVA: 2021-A-0170-S

MSFT: MS21-3017810, MS21-4504721, MS21-4504735

MSKB: 3017810, 4504721, 4504735