DEBIAN-CVE-2018-12395

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2018-12395
Published: 28 Feb 2019, 18:29
Last modified:28 Apr 2026, 20:18

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
3.0 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 Feb 2019, 18:29
Published
Vulnerability first disclosed
28 Apr 2026, 20:18
Last Modified
Vulnerability information updated

Description

By rewriting the Host: request headers using the webRequest API, a WebExtension can bypass domain restrictions through domain fronting. This would allow access to domains that share a host that are otherwise restricted. This vulnerability affects Firefox ESR < 60.3 and Firefox < 63.

CVSS Metrics

  • v3.0•HIGH•Score: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Systems

  • debian•firefox-esr

    < 60.3.0esr-1 | < 60.3.0esr-1 | < 60.3.0esr-1 | < 60.3.0esr-1

References (1)