CVE-2021-30793 : Security Advisory and Response

A logic issue was addressed with improved state management in macOS. This vulnerability allows an application to execute arbitrary code with kernel privileges in affected Apple products.

Understanding CVE-2021-30793

This CVE corresponds to a logic issue in Apple's macOS that could be exploited by a malicious application to gain kernel-level access.

What is CVE-2021-30793?

CVE-2021-30793 is a logic issue in macOS that allows an application to execute arbitrary code with kernel privileges, potentially leading to a complete system compromise.

The Impact of CVE-2021-30793

The impact of this vulnerability is severe as it enables unauthorized applications to run code with elevated privileges, posing a significant risk to the security and integrity of affected systems.

Technical Details of CVE-2021-30793

The vulnerability is fixed in macOS Big Sur 11.5, Security Update 2021-004 Catalina, and Security Update 2021-005 Mojave. The issue arises from a state management flaw that could be exploited by an application to run malicious code with kernel privileges.

Vulnerability Description

The vulnerability stems from a logic issue in macOS that enables an application to gain kernel-level access and execute arbitrary code on the system.

Affected Systems and Versions

Apple products including Security Update - Catalina, macOS versions less than 11.5, and versions older than 2021 are impacted by CVE-2021-30793.

Exploitation Mechanism

An attacker can exploit this vulnerability by running a specially crafted application on the affected macOS systems, allowing them to escalate privileges and execute arbitrary code with kernel-level access.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-30793, users are advised to take immediate steps and adopt long-term security practices.

Immediate Steps to Take

Apply the available patches and security updates provided by Apple to safeguard the systems against this vulnerability.
Avoid running untrusted applications on macOS devices to prevent exploitation of this flaw.

Long-Term Security Practices

Regularly update the operating system and security software to ensure the latest patches are installed.
Practice caution while downloading and installing applications from unverified sources to minimize the risk of exposure to malicious software.

Patching and Updates

Stay informed about security advisories from Apple and promptly apply recommended patches to address vulnerabilities and enhance the overall security posture of macOS systems.