CVE-2021-1844 Information

Description

A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 14.4.1 and iPadOS 14.4.1 Safari 14.0.3 (v. 14610.4.3.1.7 and 15610.4.3.1.7) watchOS 7.3.2 macOS Big Sur 11.2.3. Processing maliciously crafted web content may lead to arbitrary code execution.

CVSS Vector

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

Reference

https://support.apple.com/en-us/HT212222 https://support.apple.com/en-us/HT212223 https://support.apple.com/en-us/HT212220 https://support.apple.com/en-us/HT212221 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ https://support.apple.com/kb/HT212323 http://seclists.org/fulldisclosure/2021/Apr/55 https://www.debian.org/security/2021/dsa-4923

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

8.8