CVE-2021-30608 Use after free in Microsoft Edge (Chromium-based)
A use-after-free flaw in the Web Share feature allows attackers to execute arbitrary code within the browser context.
- 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-2021-30608?
CVE-2021-30608 is a high-severity use after free vulnerability in Fedoraproject Fedora, published on 3 Sep 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
Chromium: CVE-2021-30608 Use after free in Web Share
Weakness: CWE-416
Which versions are affected by CVE-2021-30608?
It affects 3 products.
Products include Fedoraproject Fedora, Microsoft Edge, Microsoft Edge Chromium.
How do I fix CVE-2021-30608?
Apply the vendor's patch.
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-2021-30608 being exploited?
There is no known exploitation of CVE-2021-30608 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as CLEANSTART-2024-EG50612, DEBIAN-CVE-2021-30608, GHSA-pvc6-fjgm-h5wf, UBUNTU-CVE-2021-30608.