CVE-2018-12377
Publication date 6 September 2018
Last updated 25 August 2025
Ubuntu priority
Description
A use-after-free vulnerability can occur when refresh driver timers are refreshed in some circumstances during shutdown when the timer is deleted while still in use. This results in a potentially exploitable crash. This vulnerability affects Firefox < 62, Firefox ESR < 60.2, and Thunderbird < 60.2.1.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| firefox | 18.04 LTS bionic |
Fixed 62.0+build2-0ubuntu0.18.04.3
|
| 16.04 LTS xenial |
Fixed 62.0+build2-0ubuntu0.16.04.3
|
|
| 14.04 LTS trusty |
Fixed 62.0+build2-0ubuntu0.14.04.3
|
|
| firefox-esr | 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| thunderbird | 18.04 LTS bionic |
Fixed 1:60.2.1+build1-0ubuntu0.18.04.2
|
| 16.04 LTS xenial |
Fixed 1:60.2.1+build1-0ubuntu0.16.04.4
|
|
| 14.04 LTS trusty |
Fixed 1:60.2.1+build1-0ubuntu0.14.04.2
|
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-3761-1
- Firefox vulnerabilities
- 6 September 2018
- USN-3793-1
- Thunderbird vulnerabilities
- 15 October 2018