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CVE-2016-5284 PUBLISHED

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.

EPSS 0.55% · 67.6th percentile

Risk Scores

EPSS Score
0.55%
67.6th percentile

Affected Products

VendorProductVersions
Ubuntu:16.04:LTSfirefox0, 48.0+build2-0ubuntu0.16.04.1, 47.0+build3-0ubuntu0.16.04.1
Ubuntu:14.04:LTSthunderbird1:45.2.0+build1-0ubuntu0.14.04.3, 0, 1:24.0+build1-0ubuntu1
Ubuntu:16.04:LTSthunderbird1:38.8.0+build1-0ubuntu0.16.04.1, 1:45.2.0+build1-0ubuntu0.16.04.1, 0
Ubuntu:14.04:LTSfirefox31.0+build1-0ubuntu0.14.04.1, 30.0+build1-0ubuntu0.14.04.3, 29.0+build1-0ubuntu0.14.04.2

Timeline

References

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