CVE-2021-21176

Public Exploit

Description

Inappropriate implementation in full screen mode in Google Chrome prior to 89.0.4389.72 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.97% Top 25%

Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory googleblog.com

Affected: Google Chrome

References

Link	Tags
https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html	release notes vendor advisory
https://crbug.com/1170584	issue tracking permissions required patch exploit third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/	vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBT54RKAE5XLMWSHLVUKJ7T2XHHYMXLH/	vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCIDZ77XUDMB2EBPPWCQXPEIJERDNSNT/	vendor advisory
https://www.debian.org/security/2021/dsa-4886	third party advisory vendor advisory
https://security.gentoo.org/glsa/202104-08	third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-21176?: CVE-2021-21176 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21176?: To fix CVE-2021-21176, 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-2021-21176 being actively exploited in the wild?: It is possible that CVE-2021-21176 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21176?: CVE-2021-21176 affects Google Chrome.

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