CVE-2018-12398

Publication date 24 October 2018

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

Description

By using the reflected URL in some special resource URIs, such as chrome:, it is possible to inject stylesheets and bypass Content Security Policy (CSP). This vulnerability affects Firefox < 63.

Read the notes from the security team

Status

Package Ubuntu Release Status
firefox 24.04 LTS noble
Fixed 63.0+build1-0ubuntu1
23.10 mantic
Fixed 63.0+build1-0ubuntu1
23.04 lunar
Fixed 63.0+build1-0ubuntu1
22.10 kinetic
Fixed 63.0+build1-0ubuntu1
22.04 LTS jammy
Fixed 63.0+build1-0ubuntu1
21.10 impish
Fixed 63.0+build1-0ubuntu1
21.04 hirsute
Fixed 63.0+build1-0ubuntu1
20.10 groovy
Fixed 63.0+build1-0ubuntu1
20.04 LTS focal
Fixed 63.0+build1-0ubuntu1
19.10 eoan
Fixed 63.0+build1-0ubuntu1
19.04 disco
Fixed 63.0+build1-0ubuntu1
18.10 cosmic
Fixed 63.0+build2-0ubuntu0.18.10.2
18.04 LTS bionic
Fixed 63.0+build2-0ubuntu0.18.04.2
16.04 LTS xenial
Fixed 63.0+build2-0ubuntu0.16.04.2
14.04 LTS trusty
Fixed 63.0+build2-0ubuntu0.14.04.2
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
19.04 disco Not in release
18.10 cosmic 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
19.04 disco Ignored end of life
18.10 cosmic 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
19.04 disco Ignored end of life
18.10 cosmic 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

Notes

tyhicks

mozjs contains a copy of the SpiderMonkey JavaScript engine

Severity score breakdown

Parameter Value
Base score 6.5 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-3801-1
    • Firefox vulnerabilities
    • 24 October 2018

Other references