CVE-2021-21111 Security feature bypass in Chrome
An attacker can escape the browser sandbox by tricking a user into installing a malicious extension, leading to code execution and privilege escalation.
- 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-2021-21111?
CVE-2021-21111 is a critical 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
Insufficient policy enforcement in WebUI in Google Chrome prior to 87.0.4280.141 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.
Weakness: CWE-1021
Which versions are affected by CVE-2021-21111?
It affects 3 products.
Products include Debian Debian Linux, Fedoraproject Fedora, Google Chrome.
How do I fix CVE-2021-21111?
Upgrade to a fixed version.
Is CVE-2021-21111 being exploited?
There is no known exploitation of CVE-2021-21111 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2021-21111, GHSA-543r-2767-7774, UBUNTU-CVE-2021-21111.