CVE-2021-21108 Use after free in Chrome
A remote attacker with compromised renderer access can escape the sandbox via a crafted HTML page due to a use-after-free flaw in Chrome's media component.
- 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-2021-21108?
CVE-2021-21108 is a critical use after free vulnerability in Debian Debian Linux, published on 8 Jan 2021. 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
Use after free in media in Google Chrome prior to 87.0.4280.141 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.
Weakness: CWE-416
Which versions are affected by CVE-2021-21108?
It affects 3 products.
Products include Debian Debian Linux, Fedoraproject Fedora, Google Chrome.
How do I fix CVE-2021-21108?
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-2021-21108 being exploited?
There is no known exploitation of CVE-2021-21108 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2021-21108, GHSA-q83w-52wv-55jx, UBUNTU-CVE-2021-21108.