CVE-2016-2821

Publication date 8 June 2016

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Description

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

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)

Other references