CVE-2020-6825

Publication date 7 April 2020

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

Description

Mozilla developers and community members Tyson Smith and Christian Holler reported memory safety bugs present in Firefox 74 and Firefox ESR 68.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.

Read the notes from the security team

Status

Package Ubuntu Release Status
firefox 24.04 LTS noble
Fixed in 75.0+build3-0ubuntu1
23.10 mantic
Fixed in 75.0+build3-0ubuntu1
23.04 lunar
Fixed in 75.0+build3-0ubuntu1
22.10 kinetic
Fixed in 75.0+build3-0ubuntu1
22.04 LTS jammy
Fixed in 75.0+build3-0ubuntu1
21.10 impish
Fixed in 75.0+build3-0ubuntu1
21.04 hirsute
Fixed in 75.0+build3-0ubuntu1
20.10 groovy
Fixed in 75.0+build3-0ubuntu1
20.04 LTS focal
Fixed in 75.0+build3-0ubuntu1
19.10 eoan
Fixed in 75.0+build3-0ubuntu0.19.10.1
18.04 LTS bionic
Fixed in 75.0+build3-0ubuntu0.18.04.1
16.04 LTS xenial
Fixed in 75.0+build3-0ubuntu0.16.04.1
14.04 LTS trusty Not in release
mozjs38 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
19.10 eoan 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
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Ignored end of life
20.04 LTS focal Ignored
19.10 eoan Ignored end of life
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
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
19.10 eoan Ignored end of life
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
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Ignored end of life
20.04 LTS focal Ignored
19.10 eoan Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
thunderbird 24.04 LTS noble
Fixed in 1:68.7.0+build1-0ubuntu1
23.10 mantic
Fixed in 1:68.7.0+build1-0ubuntu1
23.04 lunar
Fixed in 1:68.7.0+build1-0ubuntu1
22.10 kinetic
Fixed in 1:68.7.0+build1-0ubuntu1
22.04 LTS jammy
Fixed in 1:68.7.0+build1-0ubuntu1
21.10 impish
Fixed in 1:68.7.0+build1-0ubuntu1
21.04 hirsute
Fixed in 1:68.7.0+build1-0ubuntu1
20.10 groovy
Fixed in 1:68.7.0+build1-0ubuntu1
20.04 LTS focal
Fixed in 1:68.7.0+build1-0ubuntu1
19.10 eoan
Fixed in 1:68.7.0+build1-0ubuntu0.19.10.1
18.04 LTS bionic
Fixed in 1:68.7.0+build1-0ubuntu0.18.04.1
16.04 LTS xenial
Fixed in 1:68.7.0+build1-0ubuntu0.16.04.2
14.04 LTS trusty Not in release

Notes

tyhicks

mozjs contains a copy of the SpiderMonkey JavaScript engine

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.8 · Critical

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-4328-1
    • Thunderbird vulnerabilities
    • 13 April 2020
    • USN-4335-1
    • Thunderbird vulnerabilities
    • 21 April 2020

Other references

Access our resources on patching vulnerabilities