CVE-2016-5265

Publication date 3 August 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allow user-assisted remote attackers to bypass the Same Origin Policy, and conduct Universal XSS (UXSS) attacks or read arbitrary files, by arranging for the presence of a crafted HTML document and a crafted shortcut file in the same local directory.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	16.04 LTS xenial	Fixed 48.0+build2-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 48.0+build2-0ubuntu0.14.04.1
	12.04 LTS precise	Fixed 48.0+build2-0ubuntu0.12.04.1
thunderbird	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not affected

Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	High
Privileges required	None
User interaction	Required
Scope	Changed
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

USN-3044-1
Firefox vulnerabilities
5 August 2016