Detections
Analytics

Security Updates for Microsoft Excel Products (December 2020)

high Nessus Plugin ID 143564

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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-2020-17123, CVE-2020-17125, CVE-2020-17127, CVE-2020-17128, CVE-2020-17129)

 - An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2020-17126)

 - A security feature bypass vulnerability exists. An attacker can exploit this and bypass the security feature and perform unauthorized actions compromising the integrity of the system/application.
 (CVE-2020-17130)

Solution

Microsoft has released the following security updates to address this issue:
-KB4493148
 -KB4486754
 -KB4493139

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?68d763c5

http://www.nessus.org/u?64d44384

http://www.nessus.org/u?7ded81b7

Plugin Details

Severity: High

ID: 143564

File Name: smb_nt_ms20_dec_excel.nasl

Version: 1.10

Type: local

Agent: windows

Published: 12/8/2020

Updated: 2/6/2024

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-2020-17129

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: 12/8/2020

Vulnerability Publication Date: 12/8/2020

Reference Information

CVE: CVE-2020-17123, CVE-2020-17125, CVE-2020-17126, CVE-2020-17127, CVE-2020-17128, CVE-2020-17129, CVE-2020-17130

IAVA: 2020-A-0556-S, 2021-A-0017-S

MSFT: MS20-4486754, MS20-4493139, MS20-4493148

MSKB: 4486754, 4493139, 4493148