CVE-2020-27918 Information

Description

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.0.1 watchOS 7.1 iOS 14.2 and iPadOS 14.2 iCloud for Windows 11.5 Safari 14.0.1 tvOS 14.2 iTunes 12.11 for Windows. Processing maliciously crafted web content 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/HT211929 https://support.apple.com/en-us/HT211928 https://support.apple.com/en-us/HT211935 https://support.apple.com/en-us/HT211931 https://support.apple.com/en-us/HT211934 https://support.apple.com/en-us/HT211933 https://support.apple.com/en-us/HT211930 http://seclists.org/fulldisclosure/2020/Dec/32 http://www.openwall.com/lists/oss-security/2021/03/22/1 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EQ3U3VBSOJB46WCO66TEWE5OAXLTU3YW/ https://www.debian.org/security/2021/dsa-4877 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JN6ZOD62CTO54CHTMJTHVEF6R2Y532TJ/ https://security.gentoo.org/glsa/202104-03

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