CVE-2018-5105
HIGHFirefox < 58 - Unauthenticated Arbitrary File Execution via WebExtension Download Bypass
Title source: llmDescription
WebExtensions can bypass user prompts to first save and then open an arbitrarily downloaded file. This can result in an executable file running with local user privileges without explicit user consent. This vulnerability affects Firefox < 58.
References (5)
Core 5
Core References
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1040270
Issue Tracking, Permissions Required x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1390882
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3544-1/
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/102786
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2018-02/
Scores
CVSS v3
7.8
EPSS
0.0007
EPSS Percentile
20.9%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
Status
published
Products (4)
canonical/ubuntu_linux
14.04
canonical/ubuntu_linux
16.04
canonical/ubuntu_linux
17.10
mozilla/firefox
< 57.0.4
Published
Jun 11, 2018
Tracked Since
Feb 18, 2026