Security Updates for Microsoft Excel Products (May 2020)

critical Nessus Plugin ID 136511

Synopsis

The Microsoft Excel Products are missing a security update.

Description

The Microsoft Excel Products are missing a security update.
It is, therefore, affected by the following vulnerability :

- A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2020-0901)

Solution

Microsoft has released the following security updates to address this issue:
-KB4484365
-KB4484384
-KB4484338

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?f5c82e2d

http://www.nessus.org/u?78e971c1

http://www.nessus.org/u?50b5bb3a

Plugin Details

Severity: Critical

ID: 136511

File Name: smb_nt_ms20_may_excel.nasl

Version: 1.8

Type: local

Agent: windows

Published: 5/12/2020

Updated: 1/6/2021

Risk Information

CVSS Score Source: CVE-2020-0901

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: 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: 5/12/2020

Vulnerability Publication Date: 5/12/2020

Reference Information

CVE: CVE-2020-0901

MSKB: 4484365, 4484384, 4484338

MSFT: MS20-4484365, MS20-4484384, MS20-4484338

IAVA: 2020-A-0199-S