CVE-2020-6819
Published: 3 April 2020
Under certain conditions, when running the nsDocShell destructor, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.
Notes
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
Package | Release | Status |
---|---|---|
firefox Launchpad, Ubuntu, Debian |
bionic |
Released
(74.0.1+build1-0ubuntu0.18.04.1)
|
eoan |
Released
(74.0.1+build1-0ubuntu0.19.10.1)
|
|
focal |
Released
(75.0+build3-0ubuntu1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(74.0.1)
|
|
xenial |
Released
(74.0.1+build1-0ubuntu0.16.04.1)
|
|
thunderbird Launchpad, Ubuntu, Debian |
bionic |
Released
(1:68.7.0+build1-0ubuntu0.18.04.1)
|
trusty |
Does not exist
|
|
upstream |
Released
(68.7.0)
|
|
xenial |
Released
(1:68.7.0+build1-0ubuntu0.16.04.2)
|
|
eoan |
Released
(1:68.7.0+build1-0ubuntu0.19.10.1)
|
|
focal |
Released
(1:68.7.0+build1-0ubuntu1)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 8.1 |
Attack vector | Network |
Attack complexity | High |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |