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Vulnerability DatabaseCVE-2021-30736
CVE-2021-30736:
macOS vulnerability analysis and mitigation
Overview
CVE-2021-30736 is a buffer overflow vulnerability discovered in Apple's kernel that was fixed in macOS Big Sur 11.4, tvOS 14.6, watchOS 7.5, iOS 14.6 and iPadOS 14.6, released on May 24, 2021. The vulnerability was discovered by Ian Beer of Google Project Zero (Apple Security).
Technical details
The vulnerability is a buffer overflow issue in the kernel that was addressed with improved size validation. It has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating local access is required with user interaction (NVD).
Impact
When exploited, this vulnerability allows a malicious application to execute arbitrary code with kernel privileges, potentially giving the attacker complete control over the affected device (Apple Security).
Mitigation and workarounds
Apple addressed this vulnerability by implementing improved size validation in the kernel. Users should update to macOS Big Sur 11.4, tvOS 14.6, watchOS 7.5, iOS 14.6 or iPadOS 14.6 or later versions to protect against this vulnerability (Apple Security).
Additional resources
Source: This report was generated using AI
Related macOS vulnerabilities:
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