CVE-2020-29608: 
macOS vulnerability analysis and mitigation

CVE-2020-29608 is a security vulnerability discovered in Apple's FontParser component that was disclosed and patched in December 2020. The vulnerability affects multiple Apple operating systems including macOS Big Sur, iOS 14.3, iPadOS 14.3, tvOS 14.3, and watchOS 7.2. It was identified as an out-of-bounds read issue that could allow a remote attacker to leak memory (Apple Security).

The vulnerability is classified as an out-of-bounds read issue in the FontParser component. The problem was addressed by implementing improved bounds checking in the affected systems. The vulnerability has been assigned a CVSS v3.1 Base Score of 5.5 (MEDIUM) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N, indicating local access is required but no privileges are needed (NVD).

When exploited, this vulnerability allows a remote attacker to potentially leak memory from the affected system. This could lead to the disclosure of sensitive information stored in the system's memory (Apple Security, NVD).

Apple has released patches for this vulnerability in multiple system updates: macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.3, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, iOS 14.3 and iPadOS 14.3, and watchOS 7.2. Users are advised to update their systems to the latest version to protect against this vulnerability (Apple Security).