CVE-2020-12416 Use after free in Firefox
A race condition in Firefox's VideoStreamEncoder leads to a use-after-free, potentially allowing attackers to execute arbitrary code or cause a crash.
- 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-2020-12416?
CVE-2020-12416 is a high-severity use after free vulnerability in Mozilla Firefox, published on 9 Jul 2020. 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
A VideoStreamEncoder may have been freed in a race condition with VideoBroadcaster::AddOrUpdateSink, resulting in a use-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 78.
Which versions are affected by CVE-2020-12416?
It affects 2 products.
Products include Mozilla Firefox, Opensuse Leap.
How do I fix CVE-2020-12416?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2020-12416 being exploited?
There is no known exploitation of CVE-2020-12416 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-gphq-fwm7-x5g2, UBUNTU-CVE-2020-12416.