CVE-2016-5284 Information

Description

Mozilla Firefox before 49.0 Firefox ESR 45.x before 45.4 and Thunderbird 45.4 rely on unintended expiration dates for Preloaded Public Key Pinning which allows man-in-the-middle attackers to spoof add-on updates by leveraging possession of an X.509 server certificate for addons.mozilla.org signed by an arbitrary built-in Certification Authority.

CVSS Vector

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

Reference

http://rhn.redhat.com/errata/RHSA-2016-1912.html http://seclists.org/dailydave/2016/q3/51 http://www.debian.org/security/2016/dsa-3674 http://www.mozilla.org/security/announce/2016/mfsa2016-85.html http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html http://www.securityfocus.com/bid/93049 http://www.securitytracker.com/id/1036852 https://blog.mozilla.org/security/2016/09/16/update-on-add-on-pinning-vulnerability/ https://bugzilla.mozilla.org/show_bug.cgi?id=1303127 https://hackernoon.com/tor-browser-exposed-anti-privacy-implantation-at-mass-scale-bd68e9eb1e95 https://security.gentoo.org/glsa/201701-15 https://www.mozilla.org/security/advisories/mfsa2016-86/ https://www.mozilla.org/security/advisories/mfsa2016-88/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.4