Security Updates for Microsoft Excel Products (April 2020)

high Nessus Plugin ID 135474

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 exists when Microsoft Office improperly loads arbitrary type libraries. An attacker could then install programs;
view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. (CVE-2020-0760)

- 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-2020-0906)

Solution

Microsoft has released the following security updates to address this issue:
-KB4484283
-KB4484273
-KB4484285

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?a9f68ebb

http://www.nessus.org/u?723b63ab

http://www.nessus.org/u?771d8248

Plugin Details

Severity: High

ID: 135474

File Name: smb_nt_ms20_apr_excel.nasl

Version: 1.8

Type: local

Agent: windows

Published: 4/14/2020

Updated: 3/19/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

CVSS Score Source: CVE-2020-0979

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/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: 4/14/2020

Vulnerability Publication Date: 4/14/2020

Reference Information

CVE: CVE-2020-0760, CVE-2020-0906, CVE-2020-0979

IAVA: 2020-A-0144-S

MSFT: MS20-4484273, MS20-4484283, MS20-4484285

MSKB: 4484273, 4484283, 4484285