CVE-2020-9811 Explained : Impact and Mitigation

An information disclosure issue was addressed with improved state management in Apple products.

Understanding CVE-2020-9811

What is CVE-2020-9811?

CVE-2020-9811 is an information disclosure vulnerability in Apple products that could allow a local user to read kernel memory.

The Impact of CVE-2020-9811

The vulnerability could lead to unauthorized access to sensitive information stored in the kernel memory of affected devices.

Technical Details of CVE-2020-9811

Vulnerability Description

The issue was fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, and watchOS 6.2.5 to prevent a local user from reading kernel memory.

Affected Systems and Versions

iOS: Less than iOS 13.5 and iPadOS 13.5
macOS: Less than macOS Catalina 10.15.5
tvOS: Less than tvOS 13.4.5
watchOS: Less than watchOS 6.2.5

Exploitation Mechanism

The vulnerability allows a local user to exploit the flaw and potentially gain unauthorized access to kernel memory.

Mitigation and Prevention

Immediate Steps to Take

Update affected Apple devices to the latest versions mentioned above.
Monitor for any unauthorized access or unusual activities on the devices.

Long-Term Security Practices

Regularly update all software and firmware on Apple devices to patch known vulnerabilities.
Implement strong access controls and user permissions to limit potential exploitation.

Patching and Updates

Apply security patches and updates provided by Apple to ensure the mitigation of CVE-2020-9811.