CVE-2016-2817

Publication date 27 April 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	16.04 LTS xenial	Fixed 46.0+build5-0ubuntu0.16.04.2
	15.10 wily	Fixed 46.0+build5-0ubuntu0.15.10.2
	14.04 LTS trusty	Fixed 46.0+build5-0ubuntu0.14.04.2
	12.04 LTS precise	Fixed 46.0+build5-0ubuntu0.12.04.2
thunderbird	16.04 LTS xenial	Not affected
	15.10 wily	Not affected
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not affected

Severity score breakdown

Parameter	Value
Base score	5.4 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	Low
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

References

Related Ubuntu Security Notices (USN)

USN-2936-1
Firefox vulnerabilities
27 April 2016