CVE-2018-5118: canonical ubuntu_linux
Vulnerability summary
CVE-2018-5118 is a medium (CVSS 5.3) vulnerability in canonical ubuntu_linux. EPSS estimates a 1.53% chance of exploitation in the next 30 days, higher than 74.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 3 · Related 3Timeline
- 11-06-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The screenshot images displayed in the Activity Stream page displayed when a new tab is opened is created from the meta tags of websites. An issue was discovered where the page could attempt to create these images through "file:" URLs from the local file system. This loading is blocked by the sandbox but could expose local data if combined with another attack that escapes sandbox protections. This vulnerability affects Firefox < 58.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS trend
Probability
1.53%
Chance of exploitation in the next 30 days
Percentile
74%
Versus all other CVEs
30-day change
-0.03 pp
From 1.56% 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, < 58 | ≤ 57.0.4
Ubuntu1 product
- firefox< 58.0+build6-0ubuntu0.14.04.1 | < 58.0+build6-0ubuntu0.16.04.1 | < 59.0.1+build1-0ubuntu1
3 vendors · 3 products