CVE-2017-5373

Publication date 25 January 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Memory safety bugs were reported in Firefox 50.1 and Firefox ESR 45.6. 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 Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	17.04 zesty	Fixed in 52.0.1+build2-0ubuntu1
	16.10 yakkety	Fixed in 51.0.1+build2-0ubuntu0.16.10.1
	16.04 LTS xenial	Fixed in 51.0.1+build2-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed in 51.0.1+build2-0ubuntu0.14.04.1
	12.04 LTS precise	Fixed in 51.0.1+build2-0ubuntu0.12.04.1
thunderbird	17.04 zesty	Fixed in 1:45.7.0+build1-0ubuntu1
	16.10 yakkety	Fixed in 1:45.7.0+build1-0ubuntu0.16.10.1
	16.04 LTS xenial	Fixed in 1:45.7.0+build1-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed in 1:45.7.0+build1-0ubuntu0.14.04.1
	12.04 LTS precise	Fixed in 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-3175-1
Firefox vulnerabilities
27 January 2017

USN-3165-1
Thunderbird vulnerabilities
28 January 2017