Kaspersky Threats

Detect date

?

11/09/2021

Severity

?

High

Description

Multiple vulnerabilities were found in Microsoft Office. Malicious users can exploit these vulnerabilities to bypass security restrictions, execute arbitrary code.

Below is a complete list of vulnerabilities:

A security feature bypass vulnerability in Microsoft Excel can be exploited remotely to bypass security restrictions.
A remote code execution vulnerability in Microsoft Excel can be exploited remotely to execute arbitrary code.
A remote code execution vulnerability in Microsoft Word can be exploited remotely to execute arbitrary code.
A remote code execution vulnerability in Microsoft Access can be exploited remotely to execute arbitrary code.

Exploitation

The following public exploits exists for this vulnerability:

https://github.com/corelight/CVE-2021-42292

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Affected products

Microsoft Office Online Server
Microsoft Office 2019 for Mac
Microsoft Office 2016 (32-bit edition)
Microsoft Office 2013 RT Service Pack 1
Microsoft Office 2016 (64-bit edition)
Microsoft Excel 2013 Service Pack 1 (64-bit editions)
Microsoft Office 2019 for 32-bit editions
Microsoft 365 Apps for Enterprise for 32-bit Systems
Microsoft Office 2013 Service Pack 1 (32-bit editions)
Microsoft Excel 2016 (32-bit edition)
Microsoft 365 Apps for Enterprise for 64-bit Systems
Microsoft Office Web Apps Server 2013 Service Pack 1
Microsoft Office 2013 Service Pack 1 (64-bit editions)
Microsoft Excel 2016 (64-bit edition)
Microsoft Excel 2013 Service Pack 1 (32-bit editions)
Microsoft Excel 2013 RT Service Pack 1
Microsoft Office LTSC 2021 for 32-bit editions
Microsoft Office LTSC for Mac 2021
Microsoft Office 2019 for 64-bit editions
Microsoft SharePoint Enterprise Server 2013 Service Pack 1
Microsoft Office LTSC 2021 for 64-bit editions

Solution

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)

Original advisories

CVE-2021-42292
CVE-2021-40442
CVE-2021-42296
CVE-2021-41368

Impacts

?

ACE

[?]

SB

[?]

Detect date ?	11/09/2021
Severity ?	High
Description	Multiple vulnerabilities were found in Microsoft Office. Malicious users can exploit these vulnerabilities to bypass security restrictions, execute arbitrary code. Below is a complete list of vulnerabilities: A security feature bypass vulnerability in Microsoft Excel can be exploited remotely to bypass security restrictions. A remote code execution vulnerability in Microsoft Excel can be exploited remotely to execute arbitrary code. A remote code execution vulnerability in Microsoft Word can be exploited remotely to execute arbitrary code. A remote code execution vulnerability in Microsoft Access can be exploited remotely to execute arbitrary code.
Exploitation	The following public exploits exists for this vulnerability: https://github.com/corelight/CVE-2021-42292 Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.
Affected products	Microsoft Office Online Server Microsoft Office 2019 for Mac Microsoft Office 2016 (32-bit edition) Microsoft Office 2013 RT Service Pack 1 Microsoft Office 2016 (64-bit edition) Microsoft Excel 2013 Service Pack 1 (64-bit editions) Microsoft Office 2019 for 32-bit editions Microsoft 365 Apps for Enterprise for 32-bit Systems Microsoft Office 2013 Service Pack 1 (32-bit editions) Microsoft Excel 2016 (32-bit edition) Microsoft 365 Apps for Enterprise for 64-bit Systems Microsoft Office Web Apps Server 2013 Service Pack 1 Microsoft Office 2013 Service Pack 1 (64-bit editions) Microsoft Excel 2016 (64-bit edition) Microsoft Excel 2013 Service Pack 1 (32-bit editions) Microsoft Excel 2013 RT Service Pack 1 Microsoft Office LTSC 2021 for 32-bit editions Microsoft Office LTSC for Mac 2021 Microsoft Office 2019 for 64-bit editions Microsoft SharePoint Enterprise Server 2013 Service Pack 1 Microsoft Office LTSC 2021 for 64-bit editions
Solution	Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)
Original advisories	CVE-2021-42292 CVE-2021-40442 CVE-2021-42296 CVE-2021-41368
Impacts ?	ACE [?] SB [?]
Related products	Microsoft Office Microsoft Excel Microsoft SharePoint
CVE-IDS ?	CVE-2021-422926.8High CVE-2021-404426.8High CVE-2021-422966.9High CVE-2021-413686.8High
KB list	5002072 5002056 4486670 5002032 5002065 5002035 5002038 5002063 5002053
Microsoft official advisories	Microsoft Security Update Guide
	Find out the statistics of the vulnerabilities spreading in your region

KLA12337Multiple vulnerabilities in Microsoft Office

KLA12337
Multiple vulnerabilities in Microsoft Office