CVE-2021-1883 Information

Description

This issue was addressed with improved checks. This issue is fixed in Security Update 2021-004 Mojave iOS 14.5 and iPadOS 14.5 watchOS 7.4 Security Update 2021-003 Catalina tvOS 14.5 macOS Big Sur 11.3. Processing maliciously crafted server messages may lead to heap corruption.

CVSS Vector

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

Reference

https://support.apple.com/en-us/HT212530 https://support.apple.com/en-us/HT212531 https://support.apple.com/en-us/HT212317 https://support.apple.com/en-us/HT212325 https://support.apple.com/en-us/HT212323 https://support.apple.com/en-us/HT212324

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

5.5