CVE-2017-5451

Publication date 20 April 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A mechanism to spoof the addressbar through the user interaction on the addressbar and the "onblur" event. The event could be used by script to affect text display to make the loaded site appear to be different from the one actually loaded within the addressbar. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	17.04 zesty	Fixed 53.0+build6-0ubuntu0.17.04.1
	16.10 yakkety	Fixed 53.0+build6-0ubuntu0.16.10.1
	16.04 LTS xenial	Fixed 53.0+build6-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 53.0+build6-0ubuntu0.14.04.1
	12.04 LTS precise	Ignored
thunderbird	17.04 zesty	Fixed 1:52.1.1+build1-0ubuntu0.17.04.1
	16.10 yakkety	Fixed 1:52.1.1+build1-0ubuntu0.16.10.1
	16.04 LTS xenial	Fixed 1:52.1.1+build1-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 1:52.1.1+build1-0ubuntu0.14.04.1
	12.04 LTS precise	Ignored end of life

Severity score breakdown

CVSS version: CVSS v3.0

Base score 4.3 · Medium

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality impact	None
Integrity impact	Low
Availability impact	None

Scores

Parameter	Value
Base score	4.3 · Medium
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

References

Related Ubuntu Security Notices (USN)

USN-3278-1
Thunderbird vulnerabilities
16 May 2017

USN-3260-1
Firefox vulnerabilities
21 April 2017