CVE-2020-9936 Explained : Impact and Mitigation

An out-of-bounds write issue in Apple products could lead to arbitrary code execution when processing maliciously crafted images.

Understanding CVE-2020-9936

This CVE addresses a critical security vulnerability in various Apple products.

What is CVE-2020-9936?

CVE-2020-9936 is an out-of-bounds write issue that has been fixed in multiple Apple products to prevent potential arbitrary code execution.

The Impact of CVE-2020-9936

The vulnerability could allow attackers to execute arbitrary code by exploiting a flaw in image processing.

Technical Details of CVE-2020-9936

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

Vulnerability Description

The issue involves improved bounds checking to prevent out-of-bounds write access.

Affected Systems and Versions

The following Apple products and versions are affected:

iOS: Less than iOS 13.6 and iPadOS 13.6
macOS: Less than macOS Catalina 10.15.6
tvOS: Less than tvOS 13.4.8
watchOS: Less than watchOS 6.2.8
iTunes for Windows: Less than iTunes 12.10.8
iCloud for Windows: Less than iCloud for Windows 11.3
iCloud for Windows (Legacy): Less than iCloud for Windows 7.20

Exploitation Mechanism

Processing a specially crafted image could trigger the vulnerability, leading to potential code execution.

Mitigation and Prevention

Steps to address and prevent exploitation of CVE-2020-9936.

Immediate Steps to Take

Update affected Apple products to the specified fixed versions.
Avoid opening or processing images from untrusted sources.

Long-Term Security Practices

Regularly update all software and operating systems to the latest versions.
Implement security best practices to minimize exposure to potential vulnerabilities.

Patching and Updates

Apply patches and updates provided by Apple to ensure the security of the affected products.