CVE-2021-29955
Published: 24 June 2021
A transient execution vulnerability, named Floating Point Value Injection (FPVI) allowed an attacker to leak arbitrary memory addresses and may have also enabled JIT type confusion attacks. (A related vulnerability, Speculative Code Store Bypass (SCSB), did not affect Firefox.). This vulnerability affects Firefox ESR < 78.9 and Firefox < 87.
Notes
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
Package | Release | Status |
---|---|---|
firefox Launchpad, Ubuntu, Debian |
lunar |
Released
(87.0+build1-0ubuntu1)
|
bionic |
Released
(87.0+build3-0ubuntu0.18.04.1)
|
|
focal |
Released
(87.0+build3-0ubuntu0.20.04.1)
|
|
groovy |
Released
|
|
trusty |
Does not exist
|
|
xenial |
Ignored
(end of standard support, was needed)
|
|
hirsute |
Released
|
|
impish |
Released
|
|
jammy |
Released
(87.0+build1-0ubuntu1)
|
|
kinetic |
Released
(87.0+build1-0ubuntu1)
|
|
upstream |
Released
(87.0)
|
|
mantic |
Released
(87.0+build1-0ubuntu1)
|
|
firefox-esr Launchpad, Ubuntu, Debian |
jammy |
Does not exist
|
lunar |
Does not exist
|
|
bionic |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
hirsute |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(78.9.0esr-1)
|
|
xenial |
Ignored
(end of standard support)
|
|
impish |
Does not exist
|
|
kinetic |
Does not exist
|
|
mantic |
Does not exist
|
|
mozjs38 Launchpad, Ubuntu, Debian |
jammy |
Does not exist
|
lunar |
Does not exist
|
|
bionic |
Needs triage
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
hirsute |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
impish |
Does not exist
|
|
kinetic |
Does not exist
|
|
mantic |
Does not exist
|
|
mozjs52 Launchpad, Ubuntu, Debian |
jammy |
Does not exist
|
lunar |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
bionic |
Needs triage
|
|
focal |
Needs triage
|
|
groovy |
Ignored
(end of life)
|
|
hirsute |
Does not exist
|
|
impish |
Does not exist
|
|
kinetic |
Does not exist
|
|
mantic |
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
|
|
lunar |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
kinetic |
Does not exist
|
|
mantic |
Does not exist
|
|
mozjs78 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Does not exist
|
|
groovy |
Ignored
(end of life)
|
|
impish |
Ignored
(end of life)
|
|
jammy |
Needs triage
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
hirsute |
Ignored
(end of life)
|
|
kinetic |
Ignored
(end of life, was needs-triage)
|
|
mantic |
Does not exist
|
|
lunar |
Ignored
(end of life, was needs-triage)
|
|
thunderbird Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
focal |
Not vulnerable
|
|
hirsute |
Not vulnerable
|
|
impish |
Not vulnerable
|
|
jammy |
Not vulnerable
|
|
lunar |
Not vulnerable
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
groovy |
Ignored
(end of life)
|
|
xenial |
Not vulnerable
|
|
kinetic |
Not vulnerable
|
|
mantic |
Not vulnerable
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.3 |
Attack vector | Network |
Attack complexity | High |
Privileges required | None |
User interaction | Required |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29955
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-10/#CVE-2021-29955
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-11/#CVE-2021-29955
- https://www.mozilla.org/security/advisories/mfsa2021-11/
- https://www.mozilla.org/security/advisories/mfsa2021-10/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1692972
- NVD
- Launchpad
- Debian