CVE-2021-21222: Heap buffer overflow in V8
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
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/chromiumto a version that resolves this vulnerability.Fixed in 90.0.4430.212-1~deb10u1Fixed in 116.0.5845.180-1~deb11u1Fixed in 118.0.5993.70-1~deb11u1Fixed in 116.0.5845.180-1~deb12u1Fixed in 118.0.5993.70-1~deb12u1Fixed in 118.0.5993.70-1 - Upgrade
Upgrade
Google Chrome (Trace Event)to a version that resolves this vulnerability.Fixed in 90.0.4430.85 - Upgrade
Upgrade
alpine/qt5-qtwebengineto a version that resolves this vulnerability.Fixed in 5.15.3_git20210510-r0
Event History
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.