CVE-2021-1857: A memory initialization issue was addressed with improved memory handling

Description

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iTunes 12.11.3 for Windows, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iCloud for Windows 12.3, macOS Big Sur 11.3, watchOS 7.4, tvOS 14.5, iOS 14.5 and iPadOS 14.5. Processing maliciously crafted web content may disclose sensitive user information.

CVSS vector

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

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

Required

Confidentiality

High

Integrity

None

Availability

None

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.2% · higher than 69% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

IO

iOS · Apple

before 14.5 · source: NVD

MA

macOS · Apple

11.0 before 11.3 · source: NVD

IC

Icloud · Apple

before 12.3 · source: NVD

IT

Itunes · Apple

before 12.11.3 · source: NVD

MO

Mac OS X · Apple

10.14; 10.14.0; 10.14.1; 10.14.2; 10.14.3; 10.14.4; +34 more · source: NVD

TV

Tvos · Apple

before 14.5 · source: NVD

WA

Watchos · Apple

before 7.4 · source: NVD