CVE-2016-2821

Publication date 8 June 2016

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

Use-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2, when contenteditable mode is enabled, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by triggering deletion of DOM elements that were created in the editor.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	16.04 LTS xenial	Fixed 47.0+build3-0ubuntu0.16.04.1
	15.10 wily	Fixed 47.0+build3-0ubuntu0.15.10.1
	14.04 LTS trusty	Fixed 47.0+build3-0ubuntu0.14.04.1
	12.04 LTS precise	Fixed 47.0+build3-0ubuntu0.12.04.1
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	7.5 · High
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)