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kasperskyKaspersky LabKLA62823
HistoryJan 09, 2024 - 12:00 a.m.

KLA62823 Multiple vulnerabilities in Microsoft Office

2024-01-0900:00:00
Kaspersky Lab
threats.kaspersky.com
14
microsoft office
malicious code execution
security update
microsoft sharepoint
cve-2024-21318
cve-2024-20677
ace
kb list

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

9.2

Confidence

High

EPSS

0.002

Percentile

59.9%

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

Below is a complete list of vulnerabilities:

  1. A remote code execution vulnerability in Microsoft SharePoint Server can be exploited remotely to execute arbitrary code.
  2. A remote code execution vulnerability in Microsoft Office can be exploited remotely to execute arbitrary code.

Original advisories

CVE-2024-21318

CVE-2024-20677

Related products

Microsoft-Office

Microsoft-SharePoint

CVE list

CVE-2024-21318 critical

CVE-2024-20677 critical

KB list

5002539

5002541

5002540

Solution

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update component usually can be accessed from the Control Panel) and updates from the Update Options section, that are listed in your Office Account (Office Account tab usually can be accessed from the File menu)

Install Office updates

Impacts

  • ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

Affected Products

  • Microsoft SharePoint Enterprise Server 2016Microsoft 365 Apps for Enterprise for 64-bit SystemsMicrosoft Office LTSC for Mac 2021Microsoft SharePoint Server 2019Microsoft Office LTSC 2021 for 32-bit editionsMicrosoft Office 2019 for 64-bit editionsMicrosoft SharePoint Server Subscription EditionMicrosoft Office 2019 for 32-bit editionsMicrosoft Office LTSC 2021 for 64-bit editionsMicrosoft 365 Apps for Enterprise for 32-bit Systems

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

9.2

Confidence

High

EPSS

0.002

Percentile

59.9%