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CVE-2021-30663

Published: 27 July 2021

An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. 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
qtwebkit-opensource-src
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

hirsute Ignored
(end of life)
jammy Needs triage

trusty Does not exist

upstream Needs triage

xenial Needs triage

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

jammy Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Needs triage

impish Does not exist

kinetic Does not exist

mantic Does not exist

webkit2gtk
Launchpad, Ubuntu, Debian
bionic
Released (2.32.3-0ubuntu0.18.04.1)
jammy
Released (2.32.3-1ubuntu1)
lunar
Released (2.32.3-1ubuntu1)
trusty Does not exist

upstream
Released (2.32.3)
xenial Deferred

focal
Released (2.32.3-0ubuntu0.20.04.1)
hirsute
Released (2.32.3-0ubuntu0.21.04.1)
impish
Released (2.32.3-1ubuntu1)
kinetic
Released (2.32.3-1ubuntu1)
mantic
Released (2.32.3-1ubuntu1)
webkitgtk
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

hirsute Does not exist

jammy Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Needs triage

impish Does not exist

kinetic Does not exist

mantic Does not exist

wpewebkit
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

hirsute Ignored
(end of life)
jammy Needs triage

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

impish Ignored
(end of life)
kinetic 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