CVE-2021-30858
Published: 24 August 2021
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Notes
| Author | Note |
|---|---|
| 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
Status
| Package | Release | Status |
|---|---|---|
|
qtwebkit-opensource-src Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| focal |
Needs triage
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Needs triage
|
|
| kinetic |
Ignored
(end of life, was needs-triage)
|
|
| lunar |
Ignored
(end of life, was needs-triage)
|
|
| mantic |
Needs triage
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Needs triage
|
|
|
qtwebkit-source Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| focal |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| mantic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Needs triage
|
|
|
webkit2gtk Launchpad, Ubuntu, Debian |
bionic |
Released
(2.32.4-0ubuntu0.18.04.1)
|
| focal |
Released
(2.32.4-0ubuntu0.20.04.1)
|
|
| hirsute |
Released
(2.32.4-0ubuntu0.21.04.1)
|
|
| impish |
Not vulnerable
(2.33.90-1ubuntu1)
|
|
| jammy |
Not vulnerable
(2.33.90-1ubuntu1)
|
|
| kinetic |
Not vulnerable
(2.33.90-1ubuntu1)
|
|
| lunar |
Not vulnerable
(2.33.90-1ubuntu1)
|
|
| mantic |
Not vulnerable
(2.33.90-1ubuntu1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(2.32.4)
|
|
| xenial |
Deferred
|
|
|
webkitgtk Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| focal |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| mantic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Needs triage
|
|
|
wpewebkit Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Needs triage
|
|
| 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
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
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 |