CVE-2020-15676
Published: 25 September 2020
Firefox sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove, resulting in JavaScript being executed after pasting attacker-controlled data into a contenteditable element. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.
Notes
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
Package | Release | Status |
---|---|---|
firefox Launchpad, Ubuntu, Debian |
hirsute |
Released
(81.0+build2-0ubuntu1)
|
bionic |
Released
(81.0+build2-0ubuntu0.18.04.1)
|
|
focal |
Released
(81.0+build2-0ubuntu0.20.04.1)
|
|
groovy |
Released
(81.0+build2-0ubuntu1)
|
|
xenial |
Released
(81.0+build2-0ubuntu0.16.04.1)
|
|
impish |
Released
(81.0+build2-0ubuntu1)
|
|
jammy |
Released
(81.0+build2-0ubuntu1)
|
|
kinetic |
Released
(81.0+build2-0ubuntu1)
|
|
lunar |
Released
(81.0+build2-0ubuntu1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(81)
|
|
mantic |
Released
(81.0+build2-0ubuntu1)
|
|
mozjs38 Launchpad, Ubuntu, Debian |
hirsute |
Does not exist
|
bionic |
Needs triage
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
impish |
Does not exist
|
|
jammy |
Does not exist
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
mantic |
Does not exist
|
|
thunderbird Launchpad, Ubuntu, Debian |
hirsute |
Not vulnerable
(1:78.4.3+build1-0ubuntu1)
|
xenial |
Ignored
(end of standard support, was needs-triage)
|
|
bionic |
Released
(1:78.8.1+build1-0ubuntu0.18.04.1)
|
|
focal |
Released
(1:78.7.1+build1-0ubuntu0.20.04.1)
|
|
groovy |
Not vulnerable
(1:78.3.2+build1-0ubuntu1)
|
|
impish |
Not vulnerable
(1:78.4.3+build1-0ubuntu1)
|
|
jammy |
Not vulnerable
(1:78.4.3+build1-0ubuntu1)
|
|
kinetic |
Not vulnerable
(1:78.4.3+build1-0ubuntu1)
|
|
lunar |
Not vulnerable
(1:78.4.3+build1-0ubuntu1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(78.3)
|
|
mantic |
Not vulnerable
(1:78.4.3+build1-0ubuntu1)
|
|
mozjs52 Launchpad, Ubuntu, Debian |
hirsute |
Does not exist
|
bionic |
Needs triage
|
|
focal |
Needs triage
|
|
groovy |
Ignored
(end of life)
|
|
impish |
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
|
|
mantic |
Does not exist
|
|
mozjs60 Launchpad, Ubuntu, Debian |
hirsute |
Does not exist
|
bionic |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
impish |
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
|
|
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
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
mantic |
Does not exist
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 6.1 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Changed |
Confidentiality | Low |
Integrity impact | Low |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15676
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-42/#CVE-2020-15676
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-43/#CVE-2020-15676
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-44/#CVE-2020-15673
- https://ubuntu.com/security/notices/USN-4546-1
- NVD
- Launchpad
- Debian