CVE-2020-27916 Explained : Impact and Mitigation

An out-of-bounds write vulnerability affecting Apple's watchOS, iOS and iPadOS, tvOS, and macOS.

Understanding CVE-2020-27916

This CVE addresses an out-of-bounds write vulnerability in multiple Apple operating systems.

What is CVE-2020-27916?

An out-of-bounds write issue was fixed with improved input validation in macOS Big Sur 11.0.1, iOS 14.2, iPadOS 14.2, tvOS 14.2, and watchOS 7.1.
Exploiting a specially crafted audio file could result in arbitrary code execution.

The Impact of CVE-2020-27916

Successful exploitation could allow an attacker to execute arbitrary code on the affected devices.

Technical Details of CVE-2020-27916

This section provides more technical insights into the vulnerability.

Vulnerability Description

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

Affected Systems and Versions

watchOS: < 7.1
iOS and iPadOS: < 14.2
tvOS: < 14.2
macOS: < 11.0

Exploitation Mechanism

Processing a maliciously crafted audio file could trigger the vulnerability, potentially leading to arbitrary code execution.

Mitigation and Prevention

Guidelines to address and prevent the CVE-2020-27916 vulnerability.

Immediate Steps to Take

Update affected systems to the patched versions: macOS Big Sur 11.0.1, iOS 14.2, iPadOS 14.2, tvOS 14.2, and watchOS 7.1.
Avoid opening or processing audio files from untrusted or unknown sources.

Long-Term Security Practices

Regularly update all software and operating systems to the latest versions.
Implement security best practices to prevent and detect malicious activities.

Patching and Updates

Stay informed about security updates from Apple and apply them promptly to ensure protection against known vulnerabilities.