CVE-2021-30509

Public Exploit

Description

Out of bounds write in Tab Strip in Google Chrome prior to 90.0.4430.212 allowed an attacker who convinced a user to install a malicious extension to perform an out of bounds memory write via a crafted HTML page and a crafted Chrome extension.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.27%
Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory googleblog.com Vendor Advisory crbug.com
Affected: Google Chrome
Published at:
Updated at:

References

Link Tags
https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop.html release notes vendor advisory
https://crbug.com/1196309 issue tracking permissions required patch vendor advisory exploit
https://security.gentoo.org/glsa/202107-06 third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-30509?
CVE-2021-30509 has been scored as a high severity vulnerability.
How to fix CVE-2021-30509?
To fix CVE-2021-30509, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-30509 being actively exploited in the wild?
It is possible that CVE-2021-30509 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-30509?
CVE-2021-30509 affects Google Chrome.
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