CVE-2021-30842 Information

Description

This issue was addressed with improved checks. This issue is fixed in iOS 14.8 and iPadOS 14.8 macOS Big Sur 11.6 Security Update 2021-005 Catalina tvOS 15 iOS 15 and iPadOS 15 watchOS 8. Processing a maliciously crafted dfont 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/HT212819 https://support.apple.com/en-us/HT212807 https://support.apple.com/en-us/HT212804 https://support.apple.com/en-us/HT212815 https://support.apple.com/en-us/HT212805 https://support.apple.com/en-us/HT212814 http://seclists.org/fulldisclosure/2021/Oct/63 http://seclists.org/fulldisclosure/2021/Oct/62 http://seclists.org/fulldisclosure/2021/Oct/61

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