CVE-2020-27919 : Exploit Details and Defense Strategies
Learn about CVE-2020-27919, an out-of-bounds write vulnerability in macOS that could lead to arbitrary code execution. Find mitigation steps and necessary updates here.
An out-of-bounds write vulnerability in macOS addressed with improved input validation.
Understanding CVE-2020-27919
What is CVE-2020-27919?
CVE-2020-27919 is an out-of-bounds write vulnerability in macOS that could allow an attacker to execute arbitrary code by processing a specially crafted image.
The Impact of CVE-2020-27919
This vulnerability could lead to arbitrary code execution on affected systems, posing a significant security risk.
Technical Details of CVE-2020-27919
Vulnerability Description
The issue was fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, and macOS Big Sur 11.0.1.
Affected Systems and Versions
- Product: macOS
- Vendor: Apple
- Versions Affected:
- macOS versions less than 11.0
- macOS versions less than 11.1
Exploitation Mechanism
Processing a maliciously crafted image triggers the vulnerability, potentially enabling attackers to execute arbitrary code.
Mitigation and Prevention
Immediate Steps to Take
- Update macOS to the latest version to patch the vulnerability.
- Avoid opening or processing files from untrusted or unknown sources.
Long-Term Security Practices
- Regularly update software and security patches.
- Implement network and endpoint security measures to prevent unauthorized access.
Patching and Updates
Apply the following updates:
- macOS Big Sur 11.1
- Security Update 2020-001 Catalina
- Security Update 2020-007 Mojave
- macOS Big Sur 11.0.1