CVE-2021-23985
Published: 25 March 2021
If an attacker is able to alter specific about:config values (for example malware running on the user's computer), the Devtools remote debugging feature could have been enabled in a way that was unnoticable to the user. This would have allowed a remote attacker (able to make a direct network connection to the victim) to monitor the user's browsing activity and (plaintext) network traffic. This was addressed by providing a visual cue when Devtools has an open network socket. This vulnerability affects Firefox < 87.
Notes
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
Package | Release | Status |
---|---|---|
firefox Launchpad, Ubuntu, Debian |
bionic |
Released
(87.0+build3-0ubuntu0.18.04.2)
|
focal |
Released
(87.0+build3-0ubuntu0.20.04.2)
|
|
groovy |
Released
(87.0+build3-0ubuntu0.20.10.1)
|
|
hirsute |
Released
(87.0+build3-0ubuntu1)
|
|
jammy |
Released
(87.0+build3-0ubuntu1)
|
|
kinetic |
Released
(87.0+build3-0ubuntu1)
|
|
lunar |
Released
(87.0+build3-0ubuntu1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(87.0)
|
|
xenial |
Released
(87.0+build3-0ubuntu0.16.04.2)
|
|
impish |
Released
(87.0+build3-0ubuntu1)
|
|
mantic |
Released
(87.0+build3-0ubuntu1)
|
|
mozjs38 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
hirsute |
Does not exist
|
|
jammy |
Does not exist
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
impish |
Does not exist
|
|
mantic |
Does not exist
|
|
mozjs52 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
focal |
Needs triage
|
|
groovy |
Ignored
(end of life)
|
|
hirsute |
Does not exist
|
|
jammy |
Does not exist
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
impish |
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
|
|
jammy |
Does not exist
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
impish |
Does not exist
|
|
mantic |
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)
|
|
jammy |
Needs triage
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
kinetic |
Ignored
(end of life, was needs-triage)
|
|
impish |
Ignored
(end of life)
|
|
mantic |
Does not exist
|
|
lunar |
Ignored
(end of life, was needs-triage)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 6.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |