CVE-2020-1021 Explained : Impact and Mitigation

An elevation of privilege vulnerability exists in Windows Error Reporting (WER) when WER handles and executes files, aka 'Windows Error Reporting Elevation of Privilege Vulnerability'.

Understanding CVE-2020-1021

This CVE involves a security vulnerability in Windows Error Reporting (WER) that could allow an attacker to elevate privileges.

What is CVE-2020-1021?

CVE-2020-1021 is an elevation of privilege vulnerability in Windows Error Reporting (WER) when it processes and runs files.

The Impact of CVE-2020-1021

The vulnerability could potentially allow an attacker to gain elevated privileges on the affected system, posing a significant security risk.

Technical Details of CVE-2020-1021

This section covers specific technical details of the CVE.

Vulnerability Description

The vulnerability exists in the way Windows Error Reporting (WER) manages and executes files.

Affected Systems and Versions

The following products and versions are impacted:

Windows 10 Version 1803, 1809, 1709, 10
Windows 10 Version 1607
Windows Server 2019, 2016, version 1803, 2019 (Core installation), 2016 (Core installation)

Exploitation Mechanism

Attackers could exploit this vulnerability by tricking the Windows Error Reporting system into executing malicious files, leading to privilege escalation.

Mitigation and Prevention

Steps to address and prevent the exploitation of CVE-2020-1021.

Immediate Steps to Take

Apply security patches provided by Microsoft promptly.
Monitor for any unusual system behavior or unauthorized access.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access.
Regularly update and patch systems to prevent known vulnerabilities from being exploited.
Educate users on safe computing practices to avoid downloading and executing unknown files.

Patching and Updates

Ensure that all affected systems are updated with the latest security patches from Microsoft.