CVE-2020-27936 Explained : Impact and Mitigation

An out-of-bounds read issue in macOS led to the disclosure of kernel memory, potentially allowing a local user to cause unexpected system termination or read kernel memory.

Understanding CVE-2020-27936

This CVE involves an out-of-bounds read vulnerability in macOS that could be exploited by a local user.

What is CVE-2020-27936?

This CVE describes a security issue in macOS that could be abused by a local user to access kernel memory improperly.

The Impact of CVE-2020-27936

The vulnerability could lead to the disclosure of kernel memory, potentially enabling unauthorized access to sensitive information.

Technical Details of CVE-2020-27936

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability is an out-of-bounds read issue in macOS that was mitigated through enhanced input validation.

Affected Systems and Versions

Affected Product: macOS
Vendor: Apple
Affected Versions: Less than 11.1

Exploitation Mechanism

The vulnerability could be exploited by a local user to trigger unexpected system termination or access kernel memory.

Mitigation and Prevention

Steps to address and prevent exploitation of the vulnerability.

Immediate Steps to Take

Update macOS to version 11.1 or later to mitigate the vulnerability.
Apply Security Update 2020-001 Catalina or Security Update 2020-007 Mojave.

Long-Term Security Practices

Regularly update your operating system and software to patch known vulnerabilities.
Implement least privilege access to limit the impact of potential security breaches.
Monitor and restrict access to sensitive system resources.

Patching and Updates

Ensure timely installation of security updates and patches to protect against known vulnerabilities.