CVE-2021-30939: An out-of-bounds read was addressed with improved bounds checking

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

Attack vector

Local

Complexity

Low

Privileges

None

User interaction

Required

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)4.0% · higher than 91% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

IO

iOS · Apple

before 15.2 · source: NVD

MA

macOS · Apple

11.0 before 11.6.2; 12.0 before 12.1 · source: NVD

MO

Mac OS X · Apple

10.15 before 10.15.7; 10.15.7; 10.15.7; 10.15.7; 10.15.7; 10.15.7; +6 more · source: NVD

TV

Tvos · Apple

before 15.2 · source: NVD

WA

Watchos · Apple

before 8.3 · source: NVD