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CVE-2020-27918

Published: 26 March 2021

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.

Notes

AuthorNote
jdstrand
webkit receives limited support. For details, see
https://wiki.ubuntu.com/SecurityTeam/FAQ#webkit
webkit in Ubuntu uses the JavaScriptCore (JSC) engine, not V8

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
qtwebkit-opensource-src
Launchpad, Ubuntu, Debian
kinetic Ignored
(end of life, was needs-triage)
bionic Needs triage

focal Needs triage

groovy Ignored
(end of life)
hirsute Ignored
(end of life)
trusty Does not exist

upstream Needs triage

xenial Needs triage

impish Ignored
(end of life)
jammy Needs triage

mantic Needs triage

lunar Ignored
(end of life, was needs-triage)
qtwebkit-source
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

groovy Does not exist

xenial Needs triage

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

mantic Does not exist

webkit2gtk
Launchpad, Ubuntu, Debian
xenial Deferred

bionic
Released (2.30.6-0ubuntu0.18.04.1)
focal
Released (2.30.6-0ubuntu0.20.04.1)
groovy
Released (2.30.6-0ubuntu0.20.10.1)
hirsute
Released (2.32.0-1ubuntu3)
impish
Released (2.32.0-1ubuntu3)
jammy
Released (2.32.0-1ubuntu3)
kinetic
Released (2.32.0-1ubuntu3)
lunar
Released (2.32.0-1ubuntu3)
trusty Does not exist

upstream
Released (2.30.6)
mantic
Released (2.32.0-1ubuntu3)
webkitgtk
Launchpad, Ubuntu, Debian
xenial Needs triage

bionic Needs triage

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

mantic Does not exist

wpewebkit
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

groovy Ignored
(end of life)
hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy Needs triage

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H