CVE-2016-5284

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

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/

Details

Risk Information

CVSS v2

CVSS v3