CVE-2020-0936 Explained : Impact and Mitigation

An elevation of privilege vulnerability exists when a Windows scheduled task improperly handles file redirections, aka 'Windows Scheduled Task Elevation of Privilege Vulnerability'.

Understanding CVE-2020-0936

This CVE relates to a security issue in Windows that can allow an elevation of privilege.

What is CVE-2020-0936?

CVE-2020-0936 is an elevation of privilege vulnerability in Windows systems that arises from incorrect handling of file redirections in a scheduled task.

The Impact of CVE-2020-0936

The presence of this vulnerability could potentially allow an attacker to gain elevated privileges on the affected system, enabling them to execute malicious actions.

Technical Details of CVE-2020-0936

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability involves improperly handling file redirections in Windows scheduled tasks, leading to an elevation of privilege threat.

Affected Systems and Versions

The following Windows systems and versions are impacted by CVE-2020-0936:

Windows 10 Version 1803, 1809, 1709, 10, 1607, 8.1, and RT 8.1
Windows Server 1803, 2019, 2016, 2012, and 2012 R2
Windows 10 Version 1909 for various systems
Windows 10 Version 1903 for various systems
Windows Server, version 1909 and 1903

Exploitation Mechanism

Exploiting this vulnerability involves manipulating file redirections within a scheduled task to gain unauthorized higher system privileges.

Mitigation and Prevention

Understanding how to prevent and mitigate the impact of CVE-2020-0936 is crucial.

Immediate Steps to Take

Apply the necessary security updates provided by Microsoft promptly.
Monitor system logs for any suspicious activities related to scheduled tasks.
Implement the principle of least privilege to limit user rights.

Long-Term Security Practices

Regularly update and patch all systems to address known vulnerabilities.
Conduct security audits and assessments to identify weaknesses proactively.
Educate users on secure computing practices and the risks associated with elevation of privilege vulnerabilities.

Patching and Updates

Microsoft regularly releases security patches and updates to address vulnerabilities like CVE-2020-0936. Ensure systems are up to date to mitigate risks effectively.