CVE-2021-21207 Use after free in Chrome
A use-after-free flaw in Chrome's IndexedDB allows attackers to escape the sandbox via malicious extensions, requiring user installation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-21207?
CVE-2021-21207 is a high-severity use after free vulnerability in Debian Debian Linux, published on 26 Apr 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Use after free in IndexedDB in Google Chrome prior to 90.0.4430.72 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-416
Which versions are affected by CVE-2021-21207?
It affects 3 products.
Products include Debian Debian Linux, Fedoraproject Fedora, Google Chrome.
How do I fix CVE-2021-21207?
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-2021-21207 being exploited?
There is no known exploitation of CVE-2021-21207 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as CLEANSTART-2024-BH54167, DEBIAN-CVE-2021-21207, GHSA-7mvj-g7gp-j4h5, UBUNTU-CVE-2021-21207.