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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 49.0-1 | |
| debian | sid | fixed | 49.0-1 |
| debian | bookworm | fixed | 45.4.0esr-1 |
| debian | bullseye | fixed | 45.4.0esr-1 |
| debian | forky | fixed | 45.4.0esr-1 |
| debian | trixie | fixed | 45.4.0esr-1 |
References
- https://security.archlinux.org/ASA-201609-22
- 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/
- https://security-tracker.debian.org/tracker/CVE-2016-5284
CWEs
CWE-20
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.