CVE-2021-30738 : Security Advisory and Response

A malicious application targeting macOS systems has the ability to overwrite arbitrary files. Apple has addressed this issue in macOS Big Sur 11.4 and Security Update 2021-004 Mojave by improving path sanitization.

Understanding CVE-2021-30738

This CVE pertains to a vulnerability in macOS systems that allows a malicious application to overwrite files.

What is CVE-2021-30738?

The CVE-2021-30738 vulnerability enables a malicious application to overwrite arbitrary files on affected macOS devices.

The Impact of CVE-2021-30738

If successfully exploited, attackers can manipulate files on macOS systems, potentially leading to unauthorized access or data loss.

Technical Details of CVE-2021-30738

The technical details of CVE-2021-30738 include:

Vulnerability Description

The vulnerability allows unauthorized files to be overwritten by a malicious application on affected macOS systems.

Affected Systems and Versions

macOS versions lower than 11.4 and those released before the year 2021 are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by deploying a malicious application capable of overwriting files on vulnerable macOS devices.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-30738, consider the following steps:

Immediate Steps to Take

Update macOS to version 11.4 or above to patch the vulnerability.

Long-Term Security Practices

Regularly update your macOS systems to ensure they are protected against known vulnerabilities.

Patching and Updates

Apply security updates provided by Apple to address security flaws and enhance system protection.