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CVE-2017-5454

Published: 20 April 2017

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.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
thunderbird
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty
Released (1:52.1.1+build1-0ubuntu0.14.04.1)
xenial
Released (1:52.1.1+build1-0ubuntu0.16.04.1)
yakkety
Released (1:52.1.1+build1-0ubuntu0.16.10.1)
zesty
Released (1:52.1.1+build1-0ubuntu0.17.04.1)
upstream
Released (52.1.1)
firefox
Launchpad, Ubuntu, Debian
precise Ignored

trusty
Released (53.0+build6-0ubuntu0.14.04.1)
upstream
Released (53.0)
xenial
Released (53.0+build6-0ubuntu0.16.04.1)
yakkety
Released (53.0+build6-0ubuntu0.16.10.1)
zesty
Released (53.0+build6-0ubuntu0.17.04.1)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N