CVE-2018-5133
MEDIUMFirefox < 59.0 - Stored Cross-Site Scripting via app.support.baseURL Preference
Title source: llmDescription
If the "app.support.baseURL" preference is changed by a malicious local program to contain HTML and script content, this content is not sanitized. It will be executed if a user loads "chrome://browser/content/preferences/in-content/preferences.xul" directly in a tab and executes a search. This stored preference is also executed whenever an EME video player plugin displays a CDM-disabled message as a notification message. This vulnerability affects Firefox < 59.
References (6)
Core 6
Core References
Permissions Required x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1430974
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/103386
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1040514
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3596-1/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2018-06/
Permissions Required x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1430511
Scores
CVSS v3
6.5
EPSS
0.0064
EPSS Percentile
70.8%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Details
CWE
CWE-200
Status
published
Products (4)
canonical/ubuntu_linux
14.04
canonical/ubuntu_linux
16.04
canonical/ubuntu_linux
17.10
mozilla/firefox
< 59.0
Published
Jun 11, 2018
Tracked Since
Feb 18, 2026