CVE-2021-1787
macOS vulnerability analysis and mitigation

Overview

CVE-2021-1787 is a local privilege escalation vulnerability discovered by James Hutchins and fixed in multiple Apple operating systems including macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4, released in January/February 2021 (Apple Security, NVD).

Technical details

The vulnerability exists in the Crash Reporter component and involves multiple issues that were addressed with improved logic. It has a CVSS v3.1 base score of 7.8 HIGH with vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating local access required with low attack complexity (NVD).

Impact

A local attacker may be able to elevate their privileges on affected systems, potentially gaining higher levels of access to perform unauthorized actions (Apple Security).

Mitigation and workarounds

Apple addressed this vulnerability by implementing improved logic in the affected components. Users should update to macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 or iPadOS 14.4 or later versions (Apple Security).

Additional resources


SourceThis report was generated using AI

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