CVE-2020-16879 : Exploit Details and Defense Strategies

An information disclosure vulnerability in Windows Projected Filesystem could allow attackers to access sensitive information on the system.

Understanding CVE-2020-16879

What is CVE-2020-16879?

An information disclosure vulnerability arises from improper handling of file redirections in Windows Projected Filesystem, potentially leading to unauthorized access to system data.

The Impact of CVE-2020-16879

Exploiting this vulnerability could enable attackers to gather information that may facilitate further compromise of the user's system.

Technical Details of CVE-2020-16879

Vulnerability Description

The vulnerability stems from Windows Projected Filesystem's incorrect file redirection handling.
Attackers could exploit this flaw after gaining system access.
A specially crafted application is used to exploit the vulnerability.

Affected Systems and Versions

Microsoft Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1909, Windows Server, version 1909, Windows 10 Version 1903, Windows 10 Version 2004, Windows Server version 2004.
Various platforms including 32-bit Systems, x64-based Systems, and ARM64-based Systems.

Exploitation Mechanism

Attackers need system access to exploit the vulnerability.
By running a specially crafted application, attackers can take advantage of the flaw.

Mitigation and Prevention

Immediate Steps to Take

Apply the security update provided by Microsoft to address the vulnerability.

Long-Term Security Practices

Regularly update systems with the latest patches and security updates.
Implement strong access controls and user permissions to limit system access.
Conduct regular security assessments and audits to identify and mitigate vulnerabilities.
Educate users on safe computing practices to prevent exploitation of known vulnerabilities.

Patching and Updates

Microsoft has released a security update to correct the handling of file redirections in Windows Projected Filesystem.