CVE-2016-5284

HIGH

Firefox < 49.0 and Firefox ESR 45.x < 45.4 - Man-in-the-Middle Spoofing via Preloaded Public Key Pinning Bypass

Title source: llm
STIX 2.1

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.

References (13)

Core 13
Core References
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2016-86/
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2016/dsa-3674
Issue Tracking, Third Party Advisory, VDB Entry x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1303127
Third Party Advisory mailing-list x_refsource_mlist
http://seclists.org/dailydave/2016/q3/51
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201701-15
Vendor Advisory vendor-advisory x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2016-1912.html
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2016-88/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/93049
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1036852

Scores

CVSS v3 7.4
EPSS 0.0054
EPSS Percentile 68.0%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

Details

CWE
CWE-20
Status published
Products (7)
mozilla/firefox 45.0
mozilla/firefox 45.0.1
mozilla/firefox 45.0.2
mozilla/firefox 45.1.1
mozilla/firefox 45.2.0
mozilla/firefox 45.3.0
mozilla/firefox < 48.0.2
Published Sep 22, 2016
Tracked Since Feb 18, 2026