CVE-2021-30939 Information

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.6.2 tvOS 15.2 macOS Monterey 12.1 Security Update 2021-008 Catalina iOS 15.2 and iPadOS 15.2 watchOS 8.3. Processing a maliciously crafted image 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/HT212975 https://support.apple.com/en-us/HT212978 https://support.apple.com/en-us/HT212979 https://support.apple.com/en-us/HT212976 https://support.apple.com/en-us/HT212981 https://support.apple.com/en-us/HT212980 https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1414 https://www.zerodayinitiative.com/advisories/ZDI-22-359/

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