Detections
Analytics

Security Updates for Microsoft Excel Products (August 2020)

high Nessus Plugin ID 139497

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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-2020-1497)

 - 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-2020-1494, CVE-2020-1495, CVE-2020-1496, CVE-2020-1498, CVE-2020-1504)

Solution

Microsoft has released the following security updates to address this issue:
-KB4484465
 -KB4484449
 -KB4484461

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?2dc68596

http://www.nessus.org/u?daa95a32

http://www.nessus.org/u?e609c2e0

Plugin Details

Severity: High

ID: 139497

File Name: smb_nt_ms20_aug_excel.nasl

Version: 1.9

Type: local

Agent: windows

Published: 8/11/2020

Updated: 12/2/2024

Supported Sensors: Nessus Agent, 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-2020-1504

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

CVSS Score Source: CVE-2020-1498

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: 8/11/2020

Vulnerability Publication Date: 8/11/2020

Reference Information

CVE: CVE-2020-1494, CVE-2020-1495, CVE-2020-1496, CVE-2020-1497, CVE-2020-1498, CVE-2020-1504

IAVA: 2020-A-0365-S

MSFT: MS20-4484449, MS20-4484461, MS20-4484465

MSKB: 4484449, 4484461, 4484465