CVE-2016-9895 Security feature bypass in Firefox
Attackers can execute inline JavaScript on marquee elements, bypassing strict Content Security Policy restrictions in Firefox and Thunderbird.
- 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-2016-9895?
CVE-2016-9895 is a medium-severity vulnerability in Debian Debian Linux, published on 11 Jun 2018. 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
Event handlers on "marquee" elements were executed despite a strict Content Security Policy (CSP) that disallowed inline JavaScript. This vulnerability affects Firefox < 50.1, Firefox ESR < 45.6, and Thunderbird < 45.6.
Weakness: CWE-254
Which versions are affected by CVE-2016-9895?
It affects 9 products.
Products include Debian Debian Linux, Mozilla Firefox, Mozilla Thunderbird, Redhat Enterprise Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server and 3 more.
How do I fix CVE-2016-9895?
Upgrade to a fixed version.
Is CVE-2016-9895 being exploited?
There is no known exploitation of CVE-2016-9895 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2016-9895, GHSA-q8q4-9m7f-q3rp, UBUNTU-CVE-2016-9895.