CVE-2021-1762: 
macOS vulnerability analysis and mitigation

CVE-2021-1762 is a security vulnerability discovered in Apple's Model I/O component that was disclosed and patched in early 2021. The vulnerability affects iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, and Security Update 2021-001 Mojave. It was discovered by Mickey Jin of Trend Micro working with Trend Micro's Zero Day Initiative (Apple Support, Apple macOS).

The vulnerability is classified as an out-of-bounds write issue in the processing of USD (Universal Scene Description) files. The security flaw was addressed by implementing improved input validation in the affected systems. When exploited, this vulnerability could lead to unexpected application termination or arbitrary code execution when processing maliciously crafted USD files (Apple Support, Apple macOS).

If successfully exploited, this vulnerability could allow an attacker to cause unexpected application termination or execute arbitrary code on the target system through a maliciously crafted USD file. This could potentially lead to unauthorized access and control of the affected device (Apple Support).

Apple has addressed this vulnerability by releasing security updates in iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, and Security Update 2021-001 Mojave. Users are advised to update their devices to these versions or later to protect against this vulnerability (Apple Support, Apple macOS).