Security Updates for Microsoft Office Products (October 2020)

high Nessus Plugin ID 141418

Synopsis

The Microsoft Office Products are affected by multiple vulnerabilities.

Description

The Microsoft Office Products are missing security updates. It is, therefore, affected by multiple vulnerabilities :

- 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-2020-16929, CVE-2020-16930)

- A remote code execution vulnerability exists in Microsoft Office 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-2020-16954)

- A remote code execution vulnerability exists when the Microsoft Office Access Connectivity Engine improperly handles objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code on a victim system.(CVE-2020-16957)

Solution

Microsoft has released the following security updates to address this issue:
-KB4484417
-KB4484435
-KB4486682
-KB4486688
-KB4486700

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/4484417

https://support.microsoft.com/en-us/help/4484435

https://support.microsoft.com/en-us/help/4486682

https://support.microsoft.com/en-us/help/4486688

https://support.microsoft.com/en-us/help/4486700

Plugin Details

Severity: High

ID: 141418

File Name: smb_nt_ms20_oct_office.nasl

Version: 1.9

Type: local

Agent: windows

Published: 10/13/2020

Updated: 12/5/2022

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-2020-16957

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:office

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 10/13/2020

Vulnerability Publication Date: 10/13/2020

Reference Information

CVE: CVE-2020-16929, CVE-2020-16930, CVE-2020-16954, CVE-2020-16957

IAVA: 2020-A-0454-S, 2020-A-0462-S

MSFT: MS20-4484417, MS20-4484435, MS20-4486682, MS20-4486688, MS20-4486700

MSKB: 4484417, 4484435, 4486682, 4486688, 4486700