CVE-2019-9811 Code injection in Firefox
Attackers can escape the browser sandbox and execute arbitrary code by exploiting a vulnerability in language pack processing.
- 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-2019-9811?
CVE-2019-9811 is a high-severity code injection vulnerability in Debian Debian Linux, published on 23 Jul 2019. 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
As part of a winning Pwn2Own entry, a researcher demonstrated a sandbox escape by installing a malicious language pack and then opening a browser feature that used the compromised translation. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
Weakness: CWE-74
Which versions are affected by CVE-2019-9811?
It affects 6 products.
Products include Debian Debian Linux, Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird, Novell Suse Package Hub for Suse Linux Enterprise, Opensuse Leap.
How do I fix CVE-2019-9811?
Upgrade to a fixed version.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2019-9811 being exploited?
There is no known exploitation of CVE-2019-9811 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2019-9811, GHSA-63j5-535g-4392, UBUNTU-CVE-2019-9811.