CVE-2020-9791 Explained : Impact and Mitigation

An out-of-bounds read vulnerability was addressed in Apple's iOS, macOS, tvOS, and watchOS. This issue could allow arbitrary code execution when processing a specially crafted audio file.

Understanding CVE-2020-9791

This CVE identifier pertains to a security vulnerability in multiple Apple operating systems that could lead to arbitrary code execution.

What is CVE-2020-9791?

CVE-2020-9791 is an out-of-bounds read vulnerability that was fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, and watchOS 6.2.5. It involves improved input validation to prevent potential exploitation.

The Impact of CVE-2020-9791

The vulnerability could be exploited by processing a maliciously crafted audio file, potentially resulting in arbitrary code execution on the affected devices.

Technical Details of CVE-2020-9791

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

Vulnerability Description

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

Affected Systems and Versions

iOS: Versions prior to 13.5 and iPadOS 13.5
macOS: Versions prior to Catalina 10.15.5
tvOS: Versions prior to 13.4.5
watchOS: Versions prior to 6.2.5

Exploitation Mechanism

The vulnerability could be exploited by processing a specially crafted audio file, triggering the out-of-bounds read and potentially leading to arbitrary code execution.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Update affected devices to the fixed versions: iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, and watchOS 6.2.5
Avoid opening or processing suspicious or untrusted audio files

Long-Term Security Practices

Regularly update all software and operating systems to the latest versions
Implement robust security measures to prevent and detect potential threats

Patching and Updates

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