Security Updates for Microsoft Excel Products (January 2020)

high Nessus Plugin ID 132867
New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it is different from CVSS.

VPR Score: 5.9

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 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-2020-0650, CVE-2020-0651)

Solution

Microsoft has released the following security updates to address this issue:
-KB4484234
-KB4484217
-KB4484243 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/4484234

https://support.microsoft.com/en-us/help/4484217

https://support.microsoft.com/en-us/help/4484243

Plugin Details

Severity: High

ID: 132867

File Name: smb_nt_ms20_jan_excel.nasl

Version: 1.6

Type: local

Agent: windows

Published: 1/14/2020

Updated: 2/14/2020

Dependencies: office_installed.nasl, microsoft_office_compatibility_pack_installed.nbin, smb_hotfixes.nasl, ms_bulletin_checks_possible.nasl

Risk Information

Risk Factor: High

VPR Score: 5.9

CVSS Score Source: CVE-2020-0650

CVSS v2.0

Base Score: 9.3

Temporal Score: 6.9

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3.0

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: 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: 1/14/2020

Vulnerability Publication Date: 1/14/2020

Reference Information

CVE: CVE-2020-0650, CVE-2020-0651

MSKB: 4484234, 4484217, 4484243

MSFT: MS20-4484234, MS20-4484217, MS20-4484243