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CVE-2017-7827

Published: 15 November 2017

Memory safety bugs were reported in Firefox 56. 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 < 57.

Notes

AuthorNote
tyhicks
mozjs contains a copy of the SpiderMonkey JavaScript engine
chrisccoulson
This is not fixed in mozjs52, but it's unclear whether it is
unaffected or just ignored as the bugs are still private. Specifically, the
following need investigating:
- https://bugzilla.mozilla.org/show_bug.cgi?id=1403646
(https://hg.mozilla.org/releases/mozilla-release/rev/2f1496c1455f)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1403716 (can't find a changeset
referencing it)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1402876
(https://hg.mozilla.org/releases/mozilla-release/rev/f06912ba5bb7)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1384121
(https://hg.mozilla.org/releases/mozilla-release/rev/05f6da3339b3,
https://hg.mozilla.org/releases/mozilla-release/rev/eab55565955d)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1384615 (can't find a changeset
referencing it)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1339485 (can't find a changeset
referencing it)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1361432 (can't find a changeset
referencing it)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1386490 (can't find a changeset
referencing it)

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
mozjs38
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Needs triage

cosmic Does not exist

disco Does not exist

eoan Does not exist

groovy Does not exist

jammy Does not exist

kinetic Does not exist

focal Does not exist

hirsute Does not exist

impish Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

zesty Ignored
(end of life)
mantic Does not exist

firefox
Launchpad, Ubuntu, Debian
groovy
Released (57.0.1+build2-0ubuntu1)
jammy
Released (57.0.1+build2-0ubuntu1)
artful
Released (57.0+build4-0ubuntu0.17.10.5)
bionic
Released (57.0.1+build2-0ubuntu1)
cosmic
Released (57.0.1+build2-0ubuntu1)
disco
Released (57.0.1+build2-0ubuntu1)
eoan
Released (57.0.1+build2-0ubuntu1)
focal
Released (57.0.1+build2-0ubuntu1)
hirsute
Released (57.0.1+build2-0ubuntu1)
impish
Released (57.0.1+build2-0ubuntu1)
kinetic
Released (57.0.1+build2-0ubuntu1)
lunar
Released (57.0.1+build2-0ubuntu1)
trusty
Released (57.0+build4-0ubuntu0.14.04.4)
upstream
Released (57.0)
xenial
Released (57.0+build4-0ubuntu0.16.04.5)
zesty
Released (57.0+build4-0ubuntu0.17.04.5)
mantic
Released (57.0.1+build2-0ubuntu1)
mozjs52
Launchpad, Ubuntu, Debian
groovy Ignored
(end of life)
jammy Does not exist

artful Ignored
(end of life)
bionic Deferred

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Deferred

hirsute Does not exist

impish Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

zesty Does not exist

mantic Does not exist

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