CVE-2018-12397

HIGH

Firefox < 63 - Unauthorized Local File Access via WebExtension

Title source: llm
STIX 2.1

Description

A WebExtension can request access to local files without the warning prompt stating that the extension will "Access your data for all websites" being displayed to the user. This allows extensions to run content scripts in local pages without permission warnings when a local file is opened. This vulnerability affects Firefox ESR < 60.3 and Firefox < 63.

References (11)

Core 11
Core References
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2018-27/
Issue Tracking, Permissions Required, Vendor Advisory x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1487478
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2018/dsa-4324
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2018-26/
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201811-04
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3005
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/105718
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3006
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3801-1/
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/11/msg00008.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1041944

Scores

CVSS v3 7.1
EPSS 0.0007
EPSS Percentile 20.8%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Details

CWE
CWE-200
Status published
Products (14)
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 18.10
debian/debian_linux 8.0
debian/debian_linux 9.0
mozilla/firefox < 60.3.0
redhat/enterprise_linux_desktop 6.0
redhat/enterprise_linux_desktop 7.0
redhat/enterprise_linux_server 6.0
... and 4 more
Published Feb 28, 2019
Tracked Since Feb 18, 2026