CVE-2020-0876 Explained : Impact and Mitigation

An information disclosure vulnerability exists when the win32k component improperly provides kernel information, aka 'Win32k Information Disclosure Vulnerability'.

Understanding CVE-2020-0876

This CVE pertains to an information disclosure vulnerability in the win32k component in Microsoft Windows.

What is CVE-2020-0876?

This CVE identifies a vulnerability in the win32k component of Microsoft Windows that can lead to an information disclosure issue.

The Impact of CVE-2020-0876

The vulnerability can allow an attacker to access sensitive kernel information, potentially leading to further exploits and unauthorized access to system data.

Technical Details of CVE-2020-0876

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from improper handling of kernel information by the win32k component.

Affected Systems and Versions

The following systems are affected by this vulnerability:

Windows 10 Version 1909 for 32-bit Systems
Windows 10 Version 1909 for x64-based Systems
Windows 10 Version 1909 for ARM64-based Systems
Windows Server, version 1909 (Server Core installation)
Windows 10 Version 1903 for 32-bit Systems
Windows 10 Version 1903 for x64-based Systems
Windows 10 Version 1903 for ARM64-based Systems
Windows Server, version 1903 (Server Core installation)

Exploitation Mechanism

The vulnerability can be exploited by a remote, authenticated attacker to disclose sensitive information from the affected systems.

Mitigation and Prevention

Steps to address and prevent exploitation of this vulnerability.

Immediate Steps to Take

Apply the latest security updates provided by Microsoft.
Monitor system logs for any suspicious activity indicating exploitation attempts.
Implement the principle of least privilege to restrict access to critical system components.

Long-Term Security Practices

Regularly update and patch the operating system and installed applications.
Conduct security training for users to raise awareness about potential risks and preventive measures.

Patching and Updates

Keep systems up to date with the latest security patches released by Microsoft to mitigate the vulnerability.