CVE-2021-30857 Information

Description

A race condition was addressed with improved locking. This issue is fixed in Security Update 2021-005 Catalina iOS 14.8 and iPadOS 14.8 tvOS 15 iOS 15 and iPadOS 15 watchOS 8 macOS Big Sur 11.6. A malicious application may be able to execute arbitrary code with kernel privileges.

CVSS Vector

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

Reference

https://support.apple.com/en-us/HT212814 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/HT212819

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.0