CVE-2016-2827

Publication date 22 September 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

The mozilla::net::IsValidReferrerPolicy function in Mozilla Firefox before 49.0 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a Content Security Policy (CSP) referrer directive with zero values.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
thunderbird	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not affected
firefox	16.10 yakkety	Fixed 49.0+build4-0ubuntu2
	16.04 LTS xenial	Fixed 49.0+build4-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 49.0+build4-0ubuntu0.14.04.1
	12.04 LTS precise	Fixed 49.0+build4-0ubuntu0.12.04.1

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)