CVE-2021-30875 : What You Need to Know

A lock screen issue in iOS and iPadOS allowed access to contacts on a locked device. This vulnerability was addressed with improved state management in iOS and iPadOS versions less than 15.1, ultimately fixed in iOS 15.1 and iPadOS 15.1.

Understanding CVE-2021-30875

This CVE describes a security issue in Apple's iOS and iPadOS that could potentially expose contacts from the lock screen to a local attacker.

What is CVE-2021-30875?

CVE-2021-30875 is a vulnerability that enabled unauthorized viewing of contacts on a locked iOS and iPadOS device due to a lock screen issue.

The Impact of CVE-2021-30875

The impact of this vulnerability could lead to a local attacker accessing contacts from the lock screen, compromising user privacy and potentially leading to further security breaches.

Technical Details of CVE-2021-30875

The technical details of CVE-2021-30875 include:

Vulnerability Description

The vulnerability stemmed from a flaw in the lock screen mechanism that allowed unauthorized access to contacts.

Affected Systems and Versions

iOS and iPadOS versions less than 15.1 were affected by this vulnerability, with the issue resolved in iOS 15.1 and iPadOS 15.1.

Exploitation Mechanism

A local attacker could exploit this vulnerability by gaining access to contacts from the lock screen on vulnerable devices.

Mitigation and Prevention

To address CVE-2021-30875, consider the following:

Immediate Steps to Take

Users should update their devices to iOS 15.1 and iPadOS 15.1 to mitigate the risk of contact exposure from the lock screen.

Long-Term Security Practices

Maintain the habit of keeping devices updated with the latest security patches to prevent similar vulnerabilities from being exploited in the future.

Patching and Updates

Regularly check for and apply software updates from Apple to ensure that known vulnerabilities are promptly addressed and resolved within the system.