CVE-2021-30676 Explained : Impact and Mitigation
CVE-2021-30676 affects macOS versions less than 11.4 and 2021, enabling local users to cause system termination or read kernel memory. Apply macOS updates for protection.
A logic issue in macOS has been addressed with improved state management. This CVE affects macOS versions less than 11.4 and less than 2021, allowing a local user to potentially cause unexpected system termination or read kernel memory. Apple has released fixes in macOS Big Sur 11.4, Security Update 2021-003 Catalina, and Security Update 2021-004 Mojave.
Understanding CVE-2021-30676
This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-30676.
What is CVE-2021-30676?
CVE-2021-30676 is a logic issue identified in macOS, which could be exploited by a local user triggering unexpected system termination or unauthorized access to kernel memory.
The Impact of CVE-2021-30676
The vulnerability could be leveraged by a local user to disrupt system operations or potentially extract sensitive kernel memory data, posing a significant security risk.
Technical Details of CVE-2021-30676
Below are specific technical details associated with CVE-2021-30676.
Vulnerability Description
The flaw in macOS versions prior to 11.4 and 2021 enables local users to manipulate system state to cause system crashes or access kernel memory.
Affected Systems and Versions
The vulnerability impacts macOS versions less than 11.4 and prior to 2021 across different Apple operating systems.
Exploitation Mechanism
A local user can exploit the logic issue to disrupt system operations or potentially gain unauthorized access to kernel memory.
Mitigation and Prevention
Understanding how to mitigate and prevent CVE-2021-30676 is crucial for maintaining system security.
Immediate Steps to Take
It is advisable to apply the latest macOS updates, specifically macOS Big Sur 11.4, Security Update 2021-003 Catalina, and Security Update 2021-004 Mojave to address this vulnerability.
Long-Term Security Practices
Regularly updating your macOS system and implementing security best practices can help protect against similar vulnerabilities in the future.
Patching and Updates
Staying up to date with security patches and software updates from Apple is essential to ensure your system is shielded against known vulnerabilities.