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Vulnerability DatabaseCVE-2021-30765

CVE-2021-30765: 
macOS vulnerability analysis and mitigation

Overview

CVE-2021-30765 is an out-of-bounds write vulnerability in the Intel Graphics Driver component of macOS that was disclosed and patched in July 2021. The vulnerability affects multiple versions of macOS including Big Sur, Catalina, and Mojave. This security flaw was discovered by Yinyi Wu of Qihoo 360 Vulcan Team and Liu Long of Ant Security Light-Year Lab (Apple Advisory).

Technical details

The vulnerability is classified as an out-of-bounds write issue (CWE-787) that was addressed with improved input validation. It received a CVSS v3.1 base score of 7.8 (High) with the 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 successfully exploited, this vulnerability could allow an application to execute arbitrary code with kernel privileges, potentially leading to complete system compromise (Apple Advisory, CVE).

Mitigation and workarounds

Apple addressed this vulnerability in macOS Big Sur 11.5, Security Update 2021-004 Catalina, and Security Update 2021-005 Mojave. Users are advised to update to these versions or later to mitigate the risk (Apple Advisory).

Additional resources

Source: This report was generated using AI

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