CVE-2020-27952 : Vulnerability Insights and Analysis

An out-of-bounds write vulnerability in macOS has been addressed with improved input validation, potentially leading to arbitrary code execution.

Understanding CVE-2020-27952

This CVE involves a security issue in macOS that could allow an attacker to execute arbitrary code by exploiting a vulnerability related to processing a specially crafted font file.

What is CVE-2020-27952?

CVE-2020-27952 is an out-of-bounds write vulnerability in macOS that has been fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, and macOS Big Sur 11.0.1.

The Impact of CVE-2020-27952

The vulnerability could be exploited by processing a maliciously crafted font file, potentially resulting in arbitrary code execution on the affected system.

Technical Details of CVE-2020-27952

Vulnerability Description

An out-of-bounds write vulnerability in macOS that could be triggered by processing a specially crafted font file.

Affected Systems and Versions

Product: macOS
Vendor: Apple
Versions Affected:
macOS versions less than 11.0
macOS versions less than 11.1

Exploitation Mechanism

The vulnerability can be exploited by processing a maliciously crafted font file, allowing an attacker to execute arbitrary code on the system.

Mitigation and Prevention

Immediate Steps to Take

Update macOS to the latest version that includes the security patches.
Avoid opening or processing files from untrusted or unknown sources.
Regularly check for security updates from Apple.

Long-Term Security Practices

Implement strong security measures on the system to prevent unauthorized access.
Educate users about the risks of opening files from unknown sources.

Patching and Updates

Ensure that all security updates and patches provided by Apple are promptly installed on the system.