Improper input validation in Mozilla Firefox
CVE-2016-5284
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.024 (82.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N.
Affected products
- Mozilla Firefox — versions 45.0, 45.0.1, 45.0.2
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@mozilla.org (x_refsource_CONFIRM)
- security@mozilla.org (x_refsource_CONFIRM, Release Notes)
- security@mozilla.org (x_refsource_CONFIRM)
- security@mozilla.org (x_refsource_CONFIRM, VDB Entry, Third Party Advisory)
- security@mozilla.org (Technical Description, x_refsource_MISC)
- security@mozilla.org (vendor-advisory, x_refsource_DEBIAN)
- security@mozilla.org (x_refsource_CONFIRM, VDB Entry, Third Party Advisory, Issue Tracking)
- security@mozilla.org (mailing-list, x_refsource_MLIST, Third Party Advisory)
- security@mozilla.org (vendor-advisory, x_refsource_GENTOO)
- security@mozilla.org (x_refsource_REDHAT, vendor-advisory)
Frequently asked questions
- What is CVE-2016-5284?
- CVE-2016-5284 is a high-severity vulnerability in Mozilla Firefox, classified under Improper Input Validation. CVSS score: 7.4/10. Published 2016-09-22.
- How severe is CVE-2016-5284?
- High severity. CVSS v3 base score is 7.4 out of 10.
- Is CVE-2016-5284 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.