Detections
Analytics

Security Updates for Microsoft Excel Products (September 2020)

high Nessus Plugin ID 140426

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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 :

 - An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory. An attacker who exploited the vulnerability could use the information to compromise the users computer or data. (CVE-2020-1224)

 - 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-2020-1332, CVE-2020-1335, CVE-2020-1594)

Solution

Microsoft has released the following security updates to address this issue:
-KB4484507
 -KB4484526
 -KB4486665

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?15ae77e2

http://www.nessus.org/u?ec82f242

http://www.nessus.org/u?3e380729

Plugin Details

Severity: High

ID: 140426

File Name: smb_nt_ms20_sep_excel.nasl

Version: 1.8

Type: local

Agent: windows

Published: 9/8/2020

Updated: 2/21/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

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-2020-1594

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: 9/8/2020

Vulnerability Publication Date: 9/8/2020

Reference Information

CVE: CVE-2020-1224, CVE-2020-1332, CVE-2020-1335, CVE-2020-1594

IAVA: 2020-A-0405-S

MSFT: MS20-4484507, MS20-4484526, MS20-4486665

MSKB: 4484507, 4484526, 4486665