CVE-2016-5259 Information

Description

Use-after-free vulnerability in the CanonicalizeXPCOMParticipant function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via a script that closes its own Service Worker within a nested sync event loop.

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html http://rhn.redhat.com/errata/RHSA-2016-1551.html http://www.debian.org/security/2016/dsa-3640 http://www.mozilla.org/security/announce/2016/mfsa2016-73.html http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html http://www.securityfocus.com/bid/92258 http://www.securitytracker.com/id/1036508 http://www.ubuntu.com/usn/USN-3044-1 https://bugzilla.mozilla.org/show_bug.cgi?id=1282992 https://security.gentoo.org/glsa/201701-15

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8