CVE-2017-5454

Publication date 20 April 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A mechanism to bypass file system access protections in the sandbox to use the file picker to access different files than those selected in the file picker through the use of relative paths. This allows for read only access to the local file system. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
thunderbird	17.04 zesty	Fixed 1:52.1.1+build1-0ubuntu0.17.04.1
	16.10 yakkety	Fixed 1:52.1.1+build1-0ubuntu0.16.10.1
	16.04 LTS xenial	Fixed 1:52.1.1+build1-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 1:52.1.1+build1-0ubuntu0.14.04.1
	12.04 LTS precise	Ignored end of life
firefox	17.04 zesty	Fixed 53.0+build6-0ubuntu0.17.04.1
	16.10 yakkety	Fixed 53.0+build6-0ubuntu0.16.10.1
	16.04 LTS xenial	Fixed 53.0+build6-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 53.0+build6-0ubuntu0.14.04.1
	12.04 LTS precise	Ignored

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.5 · High

Base metrics

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

Scores

Parameter	Value
Base score	7.5 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

USN-3278-1
Thunderbird vulnerabilities
16 May 2017

USN-3260-1
Firefox vulnerabilities
21 April 2017