CVE-2016-9076

Publication date 17 November 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

An issue where a "<select>" dropdown menu can be used to cover location bar content, resulting in potential spoofing attacks. This attack requires e10s to be enabled in order to function. This vulnerability affects Firefox < 50.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	16.10 yakkety	Fixed 50.0+build2-0ubuntu0.16.10.2
	16.04 LTS xenial	Fixed 50.0+build2-0ubuntu0.16.04.2
	14.04 LTS trusty	Fixed 50.0+build2-0ubuntu0.14.04.2
	12.04 LTS precise	Fixed 50.0+build2-0ubuntu0.12.04.2
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

Notes

sbeattie

requires e10s to be enabled, looks like ubuntu does not enable by default

Severity score breakdown

Parameter	Value
Base score	5.9 · Medium
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	High
Availability impact	None
Vector	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

References

Related Ubuntu Security Notices (USN)

USN-3124-1
Firefox vulnerabilities
19 November 2016