CVE-2021-30633 Google Chromium Indexed DB API Use-After-Free
A use-after-free flaw in Chrome's Indexed DB API allows a remote attacker to escape the sandbox and execute code via a crafted HTML page.
- Exploited in the wild
- Since 3 Nov 2021
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-30633?
CVE-2021-30633 is a critical use after free vulnerability in Fedoraproject Fedora, published on 8 Oct 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 Indexed DB API in Google Chrome prior to 93.0.4577.82 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-2021-30633?
It affects 2 products.
Products include Fedoraproject Fedora, Google Chrome.
How do I fix CVE-2021-30633?
Upgrade to a fixed version. US federal agencies must fix it by 17 Nov 2021.
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-2021-30633 being exploited?
Yes. Attackers have exploited CVE-2021-30633 in the wild since at least 3 Nov 2021.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as CLEANSTART-2024-WR63276, DEBIAN-CVE-2021-30633, GHSA-7pph-hp2f-gxfg, UBUNTU-CVE-2021-30633.