CVE-2021-1830 : What You Need to Know

An out-of-bounds read vulnerability in iOS and iPadOS was addressed in the update to version 14.5, allowing a local user to read kernel memory.

Understanding CVE-2021-1830

This CVE entry pertains to an out-of-bounds read vulnerability in iOS and iPadOS that could be exploited by a local user to access kernel memory.

What is CVE-2021-1830?

CVE-2021-1830 is a security vulnerability fixed in iOS and iPadOS 14.5. It involves an out-of-bounds read issue that could lead to a local user being able to read kernel memory.

The Impact of CVE-2021-1830

The vulnerability could allow a malicious local user to gain access to sensitive kernel memory data, potentially compromising the security of the affected device.

Technical Details of CVE-2021-1830

This section outlines the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability involves an out-of-bounds read, which was mitigated through enhanced input validation in the iOS and iPadOS 14.5 update.

Affected Systems and Versions

The issue impacts iOS and iPadOS versions lower than 14.5, and specifically, users running custom-built versions.

Exploitation Mechanism

A local user could exploit this vulnerability to gain unauthorized access to kernel memory, potentially leading to further security breaches.

Mitigation and Prevention

To address CVE-2021-1830, immediate steps, long-term security practices, and the importance of patching and updates are highlighted.

Immediate Steps to Take

Users are advised to update their devices to iOS 14.5 or iPadOS 14.5 to prevent exploitation of this vulnerability.

Long-Term Security Practices

Maintaining regular software updates, following secure coding practices, and implementing robust security measures are crucial for long-term protection.

Patching and Updates

Regularly checking for and applying software patches provided by Apple is essential to ensure the security of iOS and iPadOS devices.