medium
6.5
CWE
787 119
Advisory Published
CVE Published
Updated

CVE-2021-21222: Heap buffer overflow in V8

First published: Tue Mar 30 2021(Updated: )

Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Credit: chrome-cve-admin@google.com Guang Gong Alpha LabQihoo 360

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<90.0.4430.85
90.0.4430.85
Google Chrome<90.0.4430.85
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-2021-21222?

    CVE-2021-21222 is classified as a high severity vulnerability due to the ability of a remote attacker to exploit it.

  • How do I fix CVE-2021-21222?

    To fix CVE-2021-21222, upgrade Google Chrome to version 90.0.4430.85 or later.

  • What software is affected by CVE-2021-21222?

    CVE-2021-21222 affects Google Chrome versions prior to 90.0.4430.85 and certain versions of Chromium on Debian and Fedora.

  • Can CVE-2021-21222 be exploited remotely?

    Yes, CVE-2021-21222 can be exploited remotely if a user visits a specially crafted HTML page.

  • What impact does CVE-2021-21222 have on site isolation?

    CVE-2021-21222 allows attackers to bypass site isolation security measures in Google Chrome.

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