CVE-2020-9966 Explained : Impact and Mitigation

An out-of-bounds read vulnerability in Apple products could allow an application to execute arbitrary code with kernel privileges.

Understanding CVE-2020-9966

This CVE addresses an out-of-bounds read vulnerability in various Apple products.

What is CVE-2020-9966?

CVE-2020-9966 is an out-of-bounds read vulnerability that was fixed in macOS Big Sur 11.0.1, watchOS 7.0, tvOS 14.0, iOS 14.0, and iPadOS 14.0. It could potentially allow an application to execute arbitrary code with kernel privileges.

The Impact of CVE-2020-9966

The vulnerability could be exploited by an application to execute arbitrary code with kernel privileges, posing a significant security risk to affected systems.

Technical Details of CVE-2020-9966

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability involves an out-of-bounds read that was mitigated through improved input validation.

Affected Systems and Versions

The following Apple products and versions were affected:

tvOS less than 14.0
watchOS less than 7.0
iOS and iPadOS less than 14.0
macOS less than 11.0

Exploitation Mechanism

An application could exploit this vulnerability to perform an out-of-bounds read and potentially execute arbitrary code with kernel privileges.

Mitigation and Prevention

Steps to address and prevent exploitation of CVE-2020-9966.

Immediate Steps to Take

Update affected systems to the fixed versions: macOS Big Sur 11.0.1, watchOS 7.0, tvOS 14.0, iOS 14.0, and iPadOS 14.0
Monitor for any signs of unauthorized code execution

Long-Term Security Practices

Regularly update software and firmware to the latest versions
Implement strong security measures to prevent unauthorized access

Patching and Updates

Apply security patches promptly to address known vulnerabilities and enhance system security