CVE-2018-5133: canonical ubuntu_linux
Vulnerability summary
CVE-2018-5133 is a medium (CVSS 6.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 1.49% chance of exploitation in the next 30 days, higher than 73.6% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 3 · Related 3Timeline
- 11-06-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
If the "app.support.baseURL" preference is changed by a malicious local program to contain HTML and script content, this content is not sanitized. It will be executed if a user loads "chrome://browser/content/preferences/in-content/preferences.xul" directly in a tab and executes a search. This stored preference is also executed whenever an EME video player plugin displays a CDM-disabled message as a notification message. This vulnerability affects Firefox < 59.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS trend
Probability
1.49%
Chance of exploitation in the next 30 days
Percentile
74%
Versus all other CVEs
30-day change
-0.03 pp
From 1.52% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 17.10
Mozilla1 product
- firefox≥ unspecified, < 59 | < 59.0
Ubuntu1 product
- firefox< 59.0+build5-0ubuntu0.14.04.1 | < 59.0+build5-0ubuntu0.16.04.1 | < 59.0.1+build1-0ubuntu1
3 vendors · 3 products