CVE-2017-7827

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	24.10 oracular	Fixed 57.0.1+build2-0ubuntu1
	24.04 LTS noble	Fixed 57.0.1+build2-0ubuntu1
	23.10 mantic	Fixed 57.0.1+build2-0ubuntu1
	23.04 lunar	Fixed 57.0.1+build2-0ubuntu1
	22.10 kinetic	Fixed 57.0.1+build2-0ubuntu1
	22.04 LTS jammy	Fixed 57.0.1+build2-0ubuntu1
	21.10 impish	Fixed 57.0.1+build2-0ubuntu1
	21.04 hirsute	Fixed 57.0.1+build2-0ubuntu1
	20.10 groovy	Fixed 57.0.1+build2-0ubuntu1
	20.04 LTS focal	Fixed 57.0.1+build2-0ubuntu1
	19.10 eoan	Fixed 57.0.1+build2-0ubuntu1
	19.04 disco	Fixed 57.0.1+build2-0ubuntu1
	18.10 cosmic	Fixed 57.0.1+build2-0ubuntu1
	18.04 LTS bionic	Fixed 57.0.1+build2-0ubuntu1
	17.10 artful	Fixed 57.0+build4-0ubuntu0.17.10.5
	17.04 zesty	Fixed 57.0+build4-0ubuntu0.17.04.5
	16.04 LTS xenial	Fixed 57.0+build4-0ubuntu0.16.04.5
	14.04 LTS trusty	Fixed 57.0+build4-0ubuntu0.14.04.4
mozjs38	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.10 kinetic	Not in release
	22.04 LTS jammy	Not in release
	21.10 impish	Not in release
	21.04 hirsute	Not in release
	20.10 groovy	Not in release
	20.04 LTS focal	Not in release
	19.10 eoan	Not in release
	19.04 disco	Not in release
	18.10 cosmic	Not in release
	18.04 LTS bionic	Ignored
	17.10 artful	Ignored end of life
	17.04 zesty	Ignored end of life
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
mozjs52	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.10 kinetic	Not in release
	22.04 LTS jammy	Not in release
	21.10 impish	Not in release
	21.04 hirsute	Not in release
	20.10 groovy	Ignored end of life
	20.04 LTS focal	Vulnerable, fix deferred
	19.10 eoan	Ignored end of life
	19.04 disco	Ignored end of life
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Vulnerable, fix deferred
	17.10 artful	Ignored end of life
	17.04 zesty	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release

Notes

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)

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
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

References

Related Ubuntu Security Notices (USN)

USN-3477-1
Firefox vulnerabilities
16 November 2017

Cvss 3 Severity Score