Improper Input Validation Affecting firefox package, versions <49.0+build4-0ubuntu0.16.04.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-UBUNTU1604-FIREFOX-424695
- published22 Sept 2016
- disclosed22 Sept 2016
Introduced: 22 Sep 2016
CVE-2016-5284 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.04 firefox to version 49.0+build4-0ubuntu0.16.04.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Ubuntu.
See How to fix? for Ubuntu:16.04 relevant fixed versions and status.
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://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-5284
- https://blog.mozilla.org/security/2016/09/16/update-on-add-on-pinning-vulnerability/
- http://www.debian.org/security/2016/dsa-3674
- https://security-tracker.debian.org/tracker/CVE-2016-5284
- https://security.gentoo.org/glsa/201701-15
- https://hackernoon.com/tor-browser-exposed-anti-privacy-implantation-at-mass-scale-bd68e9eb1e95
- http://seclists.org/dailydave/2016/q3/51
- https://www.mozilla.org/security/advisories/mfsa2016-86/
- https://www.mozilla.org/security/advisories/mfsa2016-88/
- http://www.mozilla.org/security/announce/2016/mfsa2016-85.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1303127
- http://rhn.redhat.com/errata/RHSA-2016-1912.html
- http://www.securityfocus.com/bid/93049
- http://www.securitytracker.com/id/1036852