CVE-2019-8508 : Security Advisory and Response
Learn about CVE-2019-8508, a buffer overflow flaw in macOS Mojave 10.14.4 that allows arbitrary code execution via a malicious NFS network share. Find mitigation steps and preventive measures here.
This CVE involves a buffer overflow vulnerability in macOS Mojave 10.14.4 that could allow arbitrary code execution when mounting a maliciously crafted NFS network share.
Understanding CVE-2019-8508
This vulnerability in macOS Mojave 10.14.4 poses a risk of executing arbitrary code with system privileges when a specially crafted NFS network share is mounted.
What is CVE-2019-8508?
CVE-2019-8508 is a security flaw in macOS Mojave 10.14.4 that arises from inadequate bounds checking, potentially leading to a buffer overflow. By mounting a malicious NFS network share, attackers could exploit this vulnerability to execute arbitrary code with system privileges.
The Impact of CVE-2019-8508
The vulnerability allows threat actors to execute arbitrary code with elevated system privileges by leveraging a crafted NFS network share. This could result in severe security breaches and compromise the integrity of affected systems.
Technical Details of CVE-2019-8508
This section delves into the technical aspects of the CVE.
Vulnerability Description
Improved bounds checking in macOS Mojave 10.14.4 addresses a buffer overflow issue. However, mounting a maliciously crafted NFS network share can still trigger arbitrary code execution with system privileges.
Affected Systems and Versions
- Affected Product: macOS
- Vendor: Apple
- Affected Version: macOS Mojave 10.14.4
Exploitation Mechanism
The vulnerability is exploited by mounting a specifically crafted NFS network share, enabling threat actors to execute arbitrary code with system privileges.
Mitigation and Prevention
Protecting systems from CVE-2019-8508 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Apply the latest security updates and patches from Apple promptly.
- Avoid mounting untrusted or suspicious NFS network shares.
Long-Term Security Practices
- Regularly update and maintain system security configurations.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
Ensure timely installation of security patches and updates provided by Apple to mitigate the vulnerability effectively.