VULNERABILITY INTELLIGENCE
CVE-2016-5284
CVSS score7.4 HIGH
EPSS probability2.37%
CISA KEVNot currently listed
Published2016-09-22
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
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.
Weakness classification
- CWE-20: Improper Input Validation
Primary references
- security@mozilla.org
- security@mozilla.org — Third Party Advisory
- security@mozilla.org
- security@mozilla.org — Release Notes
- security@mozilla.org
- security@mozilla.org
- security@mozilla.org
- security@mozilla.org — Third Party Advisory, VDB Entry
- security@mozilla.org — Issue Tracking, Third Party Advisory, VDB Entry
- security@mozilla.org — Technical Description
- security@mozilla.org
- security@mozilla.org