CVE-2016-9893

Publication date 13 December 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Memory safety bugs were reported in Thunderbird 45.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 50.1, Firefox ESR < 45.6, and Thunderbird < 45.6.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	16.10 yakkety	Fixed 50.1.0+build2-0ubuntu0.16.10.1
	16.04 LTS xenial	Fixed 50.1.0+build2-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 50.1.0+build2-0ubuntu0.14.04.1
	12.04 LTS precise	Fixed 50.1.0+build2-0ubuntu0.12.04.1
thunderbird	16.10 yakkety	Fixed 1:45.7.0+build1-0ubuntu0.16.10.1
	16.04 LTS xenial	Fixed 1:45.7.0+build1-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 1:45.7.0+build1-0ubuntu0.14.04.1
	12.04 LTS precise	Fixed 1:45.7.0+build1-0ubuntu0.12.04.1

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.8 · Critical

Base metrics

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

Scores

Parameter	Value
Base score	9.8 · Critical
Exploitability score	-
Impact score	-

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-3155-1
Firefox vulnerabilities
13 December 2016

USN-3165-1
Thunderbird vulnerabilities
28 January 2017