CVE-2020-9873 : Security Advisory and Response

An out-of-bounds read vulnerability affecting various Apple products has been addressed with improved input validation. This vulnerability could allow arbitrary code execution when processing a maliciously crafted image.

Understanding CVE-2020-9873

This CVE identifier pertains to an out-of-bounds read vulnerability in multiple Apple products, potentially leading to arbitrary code execution.

What is CVE-2020-9873?

CVE-2020-9873 is an out-of-bounds read vulnerability that has been fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, tvOS 13.4.8, watchOS 6.2.8, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, and iCloud for Windows 7.20. It could be exploited by processing a specially crafted image.

The Impact of CVE-2020-9873

The vulnerability could allow an attacker to execute arbitrary code by tricking a user into opening a malicious image file on affected Apple devices.

Technical Details of CVE-2020-9873

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

Vulnerability Description

The vulnerability involves an out-of-bounds read issue that has been mitigated through enhanced input validation.

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

The vulnerability can be exploited by processing a specially crafted image, potentially leading to the execution of arbitrary code on the affected devices.

Mitigation and Prevention

To address CVE-2020-9873 and enhance security, follow these mitigation strategies:

Immediate Steps to Take

Update the affected Apple products to the fixed versions mentioned.
Avoid opening image files from untrusted or unknown sources.
Regularly check for security updates from Apple.

Long-Term Security Practices

Implement robust security measures on all devices to prevent unauthorized access.
Educate users about the risks of opening files from suspicious sources.

Patching and Updates

Apply patches and updates provided by Apple promptly to ensure protection against known vulnerabilities.