CVE-2016-5284 Security feature bypass in n/a
Man-in-the-middle attackers can spoof add-on updates by exploiting expired Public Key Pinning dates, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2016-5284?
CVE-2016-5284 is a high-severity vulnerability in Mozilla Firefox, published on 22 Sep 2016. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-20
Which versions are affected by CVE-2016-5284?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2016-5284?
Upgrade to a fixed version.
Is CVE-2016-5284 being exploited?
There is no known exploitation of CVE-2016-5284 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as DEBIAN-CVE-2016-5284, GHSA-2fqh-hxv3-hqmx, UBUNTU-CVE-2016-5284.