CVE-2018-5176: canonical ubuntu_linux Improper Input Validation
Vulnerability summary
CVE-2018-5176 is a medium (CVSS 6.1) Improper Input Validation vulnerability in canonical ubuntu_linux. EPSS estimates a 1.42% chance of exploitation in the next 30 days, higher than 72.3% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 4 · Related 4Timeline
- 11-06-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The JSON Viewer displays clickable hyperlinks for strings that are parseable as URLs, including "javascript:" links. If a JSON file contains malicious JavaScript script embedded as "javascript:" links, users may be tricked into clicking and running this code in the context of the JSON Viewer. This can allow for the theft of cookies and authorization tokens which are accessible to that context. This vulnerability affects Firefox < 60.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated6.1MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
1.42%
Chance of exploitation in the next 30 days
Percentile
72%
Versus all other CVEs
30-day change
-0.03 pp
From 1.44% 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 | 18.04
Mozilla1 product
- firefox≥ unspecified, < 60 | < 60.0
Ubuntu1 product
- firefox< 60.0+build2-0ubuntu0.14.04.1 | < 60.0+build2-0ubuntu0.16.04.1 | < 60.0+build2-0ubuntu1
3 vendors · 3 products
References
9 links- bugzilla.mozilla.org/show_bug.cgi?id=1442840X Refsource CONFIRMIssue TrackingPermissions RequiredVendor Advisory