CVE-2018-12369
Publication date 27 June 2018
Last updated 25 August 2025
Ubuntu priority
Description
WebExtensions bundled with embedded experiments were not correctly checked for proper authorization. This allowed a malicious WebExtension to gain full browser permissions. This vulnerability affects Firefox ESR < 60.1 and Firefox < 61.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| firefox | 18.04 LTS bionic |
Fixed 61.0+build3-0ubuntu0.18.04.1
|
| 16.04 LTS xenial |
Fixed 61.0+build3-0ubuntu0.16.04.2
|
|
| 14.04 LTS trusty |
Fixed 61.0+build3-0ubuntu0.14.04.2
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
9.8 · Critical
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-3705-1
- Firefox vulnerabilities
- 5 July 2018