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CVE-2017-7828

Published: 15 November 2017

A use-after-free vulnerability can occur when flushing and resizing layout because the "PressShell" object has been freed while still in use. This results in a potentially exploitable crash during these operations. This vulnerability affects Firefox < 57, Firefox ESR < 52.5, and Thunderbird < 52.5.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
upstream
Released (57.0)
xenial
Released (57.0+build4-0ubuntu0.16.04.5)
zesty
Released (57.0+build4-0ubuntu0.17.04.5)
artful
Released (57.0+build4-0ubuntu0.17.10.5)
bionic
Released (57.0.1+build2-0ubuntu1)
trusty
Released (57.0+build4-0ubuntu0.14.04.4)
thunderbird
Launchpad, Ubuntu, Debian
upstream
Released (52.5.0)
xenial
Released (1:52.5.0+build1-0ubuntu0.16.04.1)
zesty
Released (1:52.5.0+build1-0ubuntu0.14.04.1)
artful
Released (1:52.5.0+build1-0ubuntu0.17.10.1)
bionic
Released (1:52.6.0+build1-0ubuntu1)
trusty
Released (1:52.5.0+build1-0ubuntu0.14.04.1)

Severity score breakdown

Parameter Value
Base score 9.8
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