CVE-2021-1755 : What You Need to Know

A lock screen vulnerability in macOS allowed unauthorized access to contacts on a locked device. This issue was resolved through enhanced state management in macOS Big Sur 11.0.1, impacting users with physical access to an iOS device.

Understanding CVE-2021-1755

This section delves into the details of CVE-2021-1755.

What is CVE-2021-1755?

The vulnerability involved a security flaw in the lock screen of macOS, enabling the exposure of contacts on a locked device. Improved state management in macOS Big Sur 11.0.1 effectively addressed this issue.

The Impact of CVE-2021-1755

The vulnerability posed a risk of unauthorized access to contacts stored on a locked macOS device, particularly affecting individuals with physical access to an iOS device.

Technical Details of CVE-2021-1755

Explore the technical aspects of CVE-2021-1755.

Vulnerability Description

The flaw in the lock screen of macOS allowed individuals to bypass security measures and access contacts stored on the device.

Affected Systems and Versions

The vulnerability impacted macOS versions prior to 11.0, leaving systems susceptible to unauthorized contact access.

Exploitation Mechanism

By exploiting the lock screen vulnerability, an attacker with physical access to an iOS device could view contacts without proper authorization.

Mitigation and Prevention

Discover how to mitigate and prevent the exploitation of CVE-2021-1755.

Immediate Steps to Take

Users should update their macOS to version 11.0.1 or later to patch the vulnerability and secure contact information.

Long-Term Security Practices

Implement additional security measures, such as setting strong device passwords and limiting physical access to protect against similar vulnerabilities.

Patching and Updates

Regularly check for system updates and install patches released by Apple to address security flaws like CVE-2021-1755.