CVE-2016-5280

Publication date 22 September 2016

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

Description

Use-after-free vulnerability in the mozilla::nsTextNodeDirectionalityMap::RemoveElementFromMap function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 allows remote attackers to execute arbitrary code via bidirectional text.

Status

Package Ubuntu Release Status
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
thunderbird 16.10 yakkety
Fixed 1:45.4.0+build1-0ubuntu0.16.10.1
16.04 LTS xenial
Fixed 1:45.4.0+build1-0ubuntu0.16.04.1
14.04 LTS trusty
Fixed 1:45.4.0+build1-0ubuntu0.14.04.1
12.04 LTS precise
Fixed 1:45.4.0+build1-0ubuntu0.12.04.1

Severity score breakdown

Parameter Value
Base score 9.8 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3076-1
    • Firefox vulnerabilities
    • 22 September 2016
    • USN-3112-1
    • Thunderbird vulnerabilities
    • 27 October 2016

Other references