KLA12386 Multiple vulnerabilities in Microsoft Apps

Multiple vulnerabilities were found in Microsoft Apps. Malicious users can exploit these vulnerabilities to execute arbitrary code, spoof user interface.

Below is a complete list of vulnerabilities:

1. A remote code execution vulnerability in Microsoft Office app can be exploited remotely to execute arbitrary code.
2. A spoofing vulnerability in Windows AppX Installer can be exploited remotely to spoof user interface.

Original advisories

CVE-2021-43905

CVE-2021-43890

Related products

Microsoft-Office

CVE list

CVE-2021-43905 unknown

CVE-2021-43890 unknown

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)

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.

• SUI

Spoof user interface. Exploitation of vulnerabilities with this impact can lead to changes in user interface to beguile user into inaccurate behavior.

Affected Products

• Microsoft Office appWindows AppX Installer