CVE-2020-27931 Information

Description

A memory corruption issue existed in the processing of font files. This issue was addressed with improved input validation. This issue is fixed in iOS 14.0 and iPadOS 14.0 macOS Big Sur 11.1 Security Update 2020-001 Catalina Security Update 2020-007 Mojave macOS Big Sur 11.0.1 watchOS 7.0 tvOS 14.0. Processing a maliciously crafted font file may lead to arbitrary code execution.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://support.apple.com/en-us/HT212011 https://support.apple.com/en-us/HT211844 https://support.apple.com/en-us/HT211843 https://support.apple.com/en-us/HT211931 https://support.apple.com/en-us/HT211850

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8