CVE-2019-8759 : Exploit Details and Defense Strategies
Learn about CVE-2019-8759, an out-of-bounds read vulnerability in macOS versions less than 10.15. Find out the impact, affected systems, exploitation risks, and mitigation steps.
This CVE-2019-8759 article provides insights into an out-of-bounds read vulnerability affecting macOS systems.
Understanding CVE-2019-8759
What is CVE-2019-8759?
Improved bounds checking has been implemented to address an out-of-bounds read issue in macOS, specifically in versions less than 10.15. If exploited by a local user, this vulnerability could lead to unexpected system termination or unauthorized access to kernel memory.
The Impact of CVE-2019-8759
A local user exploiting this vulnerability could potentially cause unexpected system termination or read kernel memory.
Technical Details of CVE-2019-8759
Vulnerability Description
An out-of-bounds read issue has been resolved through improved bounds checking in macOS Catalina 10.15.1, Security Update 2019-001, and Security Update 2019-006.
Affected Systems and Versions
- Product: macOS
- Vendor: Apple
- Affected Versions: Less than 10.15
Exploitation Mechanism
If exploited by a local user, this vulnerability could result in unexpected system termination or unauthorized access to kernel memory.
Mitigation and Prevention
Immediate Steps to Take
- Apply the necessary security updates provided by Apple promptly.
- Monitor official Apple security advisories for any further instructions.
Long-Term Security Practices
- Regularly update your macOS system to the latest version to ensure all security patches are applied.
Patching and Updates
Ensure that your macOS system is updated to macOS Catalina 10.15.1 or later to mitigate the CVE-2019-8759 vulnerability.