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CVE-2021-1817

Published: 8 September 2021

A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. 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

8.8

Score breakdown

Status

Package Release Status
webkitgtk
Launchpad, Ubuntu, Debian
trusty Does not exist

bionic Needs triage

focal Does not exist

hirsute Does not exist

upstream Needs triage

xenial Needs triage

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

webkit2gtk
Launchpad, Ubuntu, Debian
bionic
Released (2.30.3-0ubuntu0.18.04.1)
focal
Released (2.30.3-0ubuntu0.20.04.1)
hirsute
Released (2.30.3-1)
trusty Does not exist

xenial Deferred

upstream
Released (2.30.0)
impish
Released (2.30.3-1)
jammy
Released (2.30.3-1)
kinetic
Released (2.30.3-1)
lunar
Released (2.30.3-1)
mantic
Released (2.30.3-1)
qtwebkit-opensource-src
Launchpad, Ubuntu, Debian
bionic Needs triage

trusty Does not exist

xenial Needs triage

focal Needs triage

upstream Needs triage

hirsute Ignored
(end of life)
kinetic Ignored
(end of life, was 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

hirsute Does not exist

trusty Does not exist

upstream Needs triage

xenial Needs triage

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

wpewebkit
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

trusty Does not exist

upstream Needs triage

xenial Does not exist

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

kinetic Does not exist

lunar Does not exist

mantic Does not exist

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H