CVE-2019-11763
Published: 23 October 2019
Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
firefox Launchpad, Ubuntu, Debian |
bionic |
Released
(70.0+build2-0ubuntu0.18.04.1)
|
| disco |
Released
(70.0+build2-0ubuntu0.19.04.1)
|
|
| eoan |
Released
(70.0+build2-0ubuntu0.19.10.1)
|
|
| focal |
Released
(70.0+build2-0ubuntu1)
|
|
| groovy |
Released
(70.0+build2-0ubuntu1)
|
|
| hirsute |
Released
(70.0+build2-0ubuntu1)
|
|
| impish |
Released
(70.0+build2-0ubuntu1)
|
|
| jammy |
Released
(70.0+build2-0ubuntu1)
|
|
| kinetic |
Released
(70.0+build2-0ubuntu1)
|
|
| lunar |
Released
(70.0+build2-0ubuntu1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(70.0)
|
|
| xenial |
Released
(70.0+build2-0ubuntu0.16.04.1)
|
|
|
mozjs38 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| 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
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
mozjs52 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| disco |
Ignored
(reached end-of-life)
|
|
| eoan |
Ignored
(reached end-of-life)
|
|
| focal |
Needs triage
|
|
| groovy |
Ignored
(reached 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
|
|
|
mozjs60 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| disco |
Ignored
(reached end-of-life)
|
|
| eoan |
Ignored
(reached end-of-life)
|
|
| 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
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
thunderbird Launchpad, Ubuntu, Debian |
bionic |
Released
(1:68.2.1+build1-0ubuntu0.18.04.1)
|
| disco |
Ignored
(reached end-of-life)
|
|
| eoan |
Released
(1:68.2.1+build1-0ubuntu0.19.10.1)
|
|
| focal |
Released
(1:68.2.0+build1.1-0ubuntu1)
|
|
| groovy |
Released
(1:68.2.0+build1.1-0ubuntu1)
|
|
| hirsute |
Released
(1:68.2.0+build1.1-0ubuntu1)
|
|
| impish |
Released
(1:68.2.0+build1.1-0ubuntu1)
|
|
| jammy |
Released
(1:68.2.0+build1.1-0ubuntu1)
|
|
| kinetic |
Released
(1:68.2.0+build1.1-0ubuntu1)
|
|
| lunar |
Released
(1:68.2.0+build1.1-0ubuntu1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(68.2)
|
|
| xenial |
Released
(1:68.7.0+build1-0ubuntu0.16.04.2)
|
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-2019-11763
- https://www.mozilla.org/en-US/security/advisories/mfsa2019-34/#CVE-2019-11763
- https://ubuntu.com/security/notices/USN-4165-1
- https://ubuntu.com/security/notices/USN-4202-1
- https://ubuntu.com/security/notices/USN-4335-1
- NVD
- Launchpad
- Debian