CVE-2020-16902 : Vulnerability Insights and Analysis

Windows Installer Elevation of Privilege Vulnerability was published on October 13, 2020, affecting various Microsoft Windows versions.

Understanding CVE-2020-16902

This CVE identifies an elevation of privilege vulnerability in the Windows Installer, allowing attackers to execute arbitrary code with elevated system privileges.

What is CVE-2020-16902?

The vulnerability arises from improper input sanitization in the Windows Installer, leading to insecure library loading behavior.
Local authenticated attackers can exploit this to run malicious code with elevated system privileges.
Attackers could potentially install unauthorized programs, manipulate or delete data, or create new accounts with full user rights.

The Impact of CVE-2020-16902

The vulnerability poses a high severity risk with a CVSS base score of 7.8.
Successful exploitation could result in unauthorized system access and control by attackers.

Technical Details of CVE-2020-16902

The following technical details provide insight into the vulnerability and affected systems.

Vulnerability Description

The security flaw in the Windows Installer allows attackers to achieve elevated privileges through insecure library loading.

Affected Systems and Versions

Windows 7, 8.1, 10, and various Windows Server versions are impacted by this vulnerability.
Specific affected versions include Windows 10 Version 1803, 1809, 1909, 2004, Windows Server 2019, and more.
Platforms affected include 32-bit Systems, x64-based Systems, and ARM64-based Systems.

Exploitation Mechanism

Attackers with local authenticated access can exploit the vulnerability to execute arbitrary code with elevated system privileges.

Mitigation and Prevention

To address and prevent the exploitation of CVE-2020-16902, consider the following mitigation strategies.

Immediate Steps to Take

Apply the security update provided by Microsoft to correct the input sanitization error.
Monitor system activity for any signs of unauthorized access or malicious behavior.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access rights and limit potential damage from privilege escalation attacks.
Regularly update and patch systems to address known vulnerabilities and enhance overall security posture.

Patching and Updates

Stay informed about security updates and patches released by Microsoft for Windows operating systems.