high
8.6
CWE
416
Advisory Published
CVE Published
Updated

CVE-2021-21202: Use after free in extensions

First published: Tue Mar 16 2021(Updated: )

Use after free in extensions 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.

Credit: chrome-cve-admin@google.com David Erceg

Affected SoftwareAffected VersionHow to fix
debian/chromium
90.0.4430.212-1~deb10u1
116.0.5845.180-1~deb11u1
118.0.5993.70-1~deb11u1
116.0.5845.180-1~deb12u1
118.0.5993.70-1~deb12u1
118.0.5993.70-1
Google Chrome (Trace Event)<90.0.4430.72
90.0.4430.72
Google Chrome (Trace Event)<90.0.4430.72
Debian=10.0
Fedora=32
Fedora=33
Fedora=34

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2021-21202?

    CVE-2021-21202 is a high severity vulnerability that could allow an attacker to escape the Chrome sandbox.

  • How do I fix CVE-2021-21202?

    To mitigate CVE-2021-21202, update Google Chrome to version 90.0.4430.72 or later.

  • What does CVE-2021-21202 affect?

    CVE-2021-21202 affects Google Chrome and the Chromium browser prior to version 90.0.4430.72.

  • Can CVE-2021-21202 be exploited via a malicious extension?

    Yes, CVE-2021-21202 can be exploited by convincing users to install a malicious Chrome extension.

  • What type of vulnerability is CVE-2021-21202 classified as?

    CVE-2021-21202 is classified as a use-after-free vulnerability.

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