CVE-2021-21222: Heap buffer overflow in V8
Published 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
Guang Gong(Alpha Lab), Qihoo 360
Affected Software
7 affected componentsFixes available
debian/chromium
90.0.4430.212-1~deb10u1116.0.5845.180-1~deb11u1118.0.5993.70-1~deb11u1116.0.5845.180-1~deb12u1118.0.5993.70-1~deb12u1118.0.5993.70-1
Google Chrome<90.0.4430.85
90.0.4430.85
Google Chrome<90.0.4430.85
Debian Debian Linux=10.0
Fedoraproject Fedora=32
Fedoraproject Fedora=33
Fedoraproject Fedora=34
Event History
Mar 30, 2021
CVE Published
12:00 AM
Apr 26, 2021
CVE Published
via MITRE·04:56 PM
Data Sourced
via MITRE·04:56 PM
DescriptionWeakness
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
1
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.
2
How do I fix CVE-2021-21222?
To fix CVE-2021-21222, upgrade Google Chrome to version 90.0.4430.85 or later.
3
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.
4
Can CVE-2021-21222 be exploited remotely?
Yes, CVE-2021-21222 can be exploited remotely if a user visits a specially crafted HTML page.
5
What impact does CVE-2021-21222 have on site isolation?
CVE-2021-21222 allows attackers to bypass site isolation security measures in Google Chrome.