CVE-2020-26972
Publication date 15 December 2020
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
The lifecycle of IPC Actors allows managed actors to outlive their manager actors; and the former must ensure that they are not attempting to use a dead actor they have a reference to. Such a check was omitted in WebGL, resulting in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 84.
Status
Package | Ubuntu Release | Status |
---|---|---|
firefox | 24.04 LTS noble |
Fixed 84.0+build3-0ubuntu2
|
22.04 LTS jammy |
Fixed 84.0+build3-0ubuntu2
|
|
20.04 LTS focal |
Fixed 84.0+build3-0ubuntu0.20.04.1
|
|
18.04 LTS bionic |
Fixed 84.0+build3-0ubuntu0.18.04.1
|
|
16.04 LTS xenial |
Fixed 84.0+build3-0ubuntu0.16.04.1
|
|
14.04 LTS trusty | Not in release | |
mozjs38 | 24.04 LTS noble | Not in release |
22.04 LTS jammy | Not in release | |
20.04 LTS focal | Not in release | |
18.04 LTS bionic | Ignored | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
mozjs52 | 24.04 LTS noble | Not in release |
22.04 LTS jammy | Not in release | |
20.04 LTS focal | Ignored | |
18.04 LTS bionic | Ignored | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
mozjs60 | 24.04 LTS noble | Not in release |
22.04 LTS jammy | Not in release | |
20.04 LTS focal | Not in release | |
18.04 LTS bionic | Not in release | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
mozjs68 | 24.04 LTS noble | Not in release |
22.04 LTS jammy | Not in release | |
20.04 LTS focal | Ignored | |
18.04 LTS bionic | Not in release | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
mozjs78 | 24.04 LTS noble | Not in release |
22.04 LTS jammy | Ignored | |
20.04 LTS focal | Not in release | |
18.04 LTS bionic | Not in release | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release |
Notes
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-4671-1
- Firefox vulnerabilities
- 15 December 2020