CVE-2017-7828
Publication date 15 November 2017
Last updated 25 August 2025
Ubuntu priority
Description
A use-after-free vulnerability can occur when flushing and resizing layout because the "PressShell" object has been freed while still in use. This results in a potentially exploitable crash during these operations. This vulnerability affects Firefox < 57, Firefox ESR < 52.5, and Thunderbird < 52.5.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| firefox | 18.04 LTS bionic |
Fixed 57.0.1+build2-0ubuntu1
|
| 16.04 LTS xenial |
Fixed 57.0+build4-0ubuntu0.16.04.5
|
|
| 14.04 LTS trusty |
Fixed 57.0+build4-0ubuntu0.14.04.4
|
|
| thunderbird | 18.04 LTS bionic |
Fixed 1:52.6.0+build1-0ubuntu1
|
| 16.04 LTS xenial |
Fixed 1:52.5.0+build1-0ubuntu0.16.04.1
|
|
| 14.04 LTS trusty |
Fixed 1:52.5.0+build1-0ubuntu0.14.04.1
|
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-3490-1
- Thunderbird vulnerabilities
- 1 December 2017
- USN-3477-1
- Firefox vulnerabilities
- 16 November 2017