CVE-2016-2817

MEDIUM

Firefox < 45.0.2 - Universal Cross-Site Scripting via WebExtension Sandbox Principal Inheritance

Title source: llm
STIX 2.1

Description

The WebExtension sandbox feature in browser/components/extensions/ext-tabs.js in Mozilla Firefox before 46.0 does not properly restrict principal inheritance during chrome.tabs.create and chrome.tabs.update API calls, which allows remote attackers to conduct Universal XSS (UXSS) attacks via a crafted extension that accesses a (1) javascript: or (2) data: URL.

References (9)

Core 9
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1035692
Mailing List vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-updates/2016-05/msg00038.html
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2936-2
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201701-15
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2936-1
Issue Tracking x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1227462
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2936-3

Scores

CVSS v3 5.4
EPSS 0.0040
EPSS Percentile 60.8%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Details

CWE
CWE-264
Status published
Products (1)
mozilla/firefox < 45.0.2
Published Apr 30, 2016
Tracked Since Feb 18, 2026