CVE-2018-12395

Advisory lineage Upstream: 0 Downstream: 14
Modified
Published: 28 Feb 2019, 18:00
Last modified:05 Aug 2024, 08:30

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.0 (nvd)
EPSS Score
1.82% LOW
2% probability -1.09%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 Feb 2019, 18:00
Published
Vulnerability first disclosed
05 Aug 2024, 08:30
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
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 1.82%• Percentile: 83%

Affected Systems

  • canonical•ubuntu_linux

    14.04 | 16.04 | 18.04 | 18.10

  • debian•debian_linux

    8.0 | 9.0

  • Unknown•Firefox

    < 63.0 | ≥ unspecified, < 63

  • mozilla•firefox_esr

    < 60.3 | ≥ unspecified, < 60.3

  • redhat•enterprise_linux_desktop

    6.0 | 7.0

  • redhat•enterprise_linux_server

    6.0 | 7.0

  • redhat•enterprise_linux_server_eus

    7.5

  • redhat•enterprise_linux_workstation

    6.0 | 7.0

References (11)