MS.Windows.Kernel.CVE-2021-31955.Information.Disclosure

Description

This indicates an attack attempt to exploit an Information Disclosure Vulnerability in Microsoft Windows Kernel.
The vulnerability is due to an error in the vulnerable application when handling a maliciously crafted file.
An attacker can exploit this to disclose sensitive information of the affected machine via a crafted file.

Affected Products

Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for ARM64-based Systems
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 1909 for 32-bit Systems
Windows 10 Version 1909 for ARM64-based Systems
Windows 10 Version 1909 for x64-based Systems
Windows 10 Version 2004 for 32-bit Systems
Windows 10 Version 2004 for ARM64-based Systems
Windows 10 Version 2004 for x64-based Systems
Windows 10 Version 20H2 for 32-bit Systems
Windows 10 Version 20H2 for ARM64-based Systems
Windows 10 Version 20H2 for x64-based Systems
Windows 10 Version 21H1 for 32-bit Systems
Windows 10 Version 21H1 for ARM64-based Systems
Windows 10 Version 21H1 for x64-based Systems
Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server, version 2004 (Server Core installation)
Windows Server, version 20H2 (Server Core Installation)

Impact

Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.

Recommended Actions

Apply the most recent upgrade or patch from the vendor.
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955

References