CVE-2021-21176: Inappropriate implementation in full screen mode

Published Jan 26, 2021
·
Updated

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.

Credit

Luan Herrera@@lbherrera_

Affected Software

18 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<89.0.4389.72
89.0.4389.72
Google Chrome<89.0.4389.72
Fedoraproject Fedora=32
Fedoraproject Fedora=33
Fedoraproject Fedora=34
Debian Debian Linux=10.0
alpine/chromium<89.0.4389.72-r0
89.0.4389.72-r0
alpine/chromium<89.0.4389.72-r0
89.0.4389.72-r0
alpine/chromium<89.0.4389.72-r0
89.0.4389.72-r0
alpine/chromium<89.0.4389.72-r0
89.0.4389.72-r0
alpine/chromium<89.0.4389.72-r0
89.0.4389.72-r0
alpine/chromium<89.0.4389.72-r0
89.0.4389.72-r0
alpine/chromium<89.0.4389.72-r0
89.0.4389.72-r0
alpine/chromium<89.0.4389.72-r0
89.0.4389.72-r0
alpine/chromium<89.0.4389.72-r0
89.0.4389.72-r0
alpine/chromium<89.0.4389.72-r0
89.0.4389.72-r0
alpine/chromium<89.0.4389.72-r0
89.0.4389.72-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/chromium to 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
  2. Upgrade

    Upgrade Google Chrome (Trace Event) to a version that resolves this vulnerability.

    Fixed in 89.0.4389.72
  3. Upgrade

    Upgrade alpine/chromium to a version that resolves this vulnerability.

    Fixed in 89.0.4389.72-r0

Event History

Jan 26, 2021
CVE Published
12:00 AM
Mar 9, 2021
CVE Published
via MITRE·05:46 PM
Data Sourced
via MITRE·05:46 PM
DescriptionWeakness
Data Sourced
via NVD·06:15 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via OSV·06:15 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2021-21176?

CVE-2021-21176 has a high severity rating due to its potential to allow remote attackers to spoof the Omnibox content.

2

How do I fix CVE-2021-21176?

To fix CVE-2021-21176, you should update Google Chrome to version 90.0.4430.212 or later.

3

Which versions of Google Chrome are affected by CVE-2021-21176?

Google Chrome versions prior to 89.0.4389.72 are affected by CVE-2021-21176.

4

Is CVE-2021-21176 specific to any operating system?

CVE-2021-21176 affects multiple operating systems including Debian and Fedora running older versions of Google Chrome.

5

What impacts does CVE-2021-21176 have on users?

CVE-2021-21176 may allow attackers to manipulate the Omnibox and mislead users regarding the URLs they are visiting.

Company

Resources

Contact

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