CVE-2021-29964
Published: 24 June 2021
A locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would process incorrectly, leading to an out-of-bounds read. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR < 78.11.
Notes
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
mdeslaur | only affects thunderbird on windows |
Priority
Status
Package | Release | Status |
---|---|---|
firefox Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(Windows only)
|
focal |
Not vulnerable
(Windows only)
|
|
groovy |
Not vulnerable
(Windows only)
|
|
hirsute |
Not vulnerable
(Windows only)
|
|
impish |
Not vulnerable
(Windows only)
|
|
jammy |
Not vulnerable
(Windows only)
|
|
kinetic |
Not vulnerable
(Windows only)
|
|
lunar |
Not vulnerable
(Windows only)
|
|
mantic |
Not vulnerable
(Windows only)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(89)
|
|
xenial |
Not vulnerable
(Windows only)
|
|
mozjs38 Launchpad, Ubuntu, Debian |
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
|
|
mantic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
mozjs52 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
focal |
Needs triage
|
|
groovy |
Ignored
(end of life)
|
|
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 |
Does not exist
|
|
mozjs68 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Needs triage
|
|
groovy |
Ignored
(end of life)
|
|
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 |
Does not exist
|
|
mozjs78 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Does not exist
|
|
groovy |
Ignored
(end of life)
|
|
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 |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
thunderbird Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
focal |
Not vulnerable
|
|
groovy |
Ignored
(end of life)
|
|
hirsute |
Not vulnerable
|
|
impish |
Not vulnerable
|
|
jammy |
Not vulnerable
|
|
kinetic |
Not vulnerable
|
|
lunar |
Not vulnerable
|
|
mantic |
Not vulnerable
|
|
trusty |
Does not exist
|
|
upstream |
Released
(78.11)
|
|
xenial |
Not vulnerable
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.1 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H |