CVE-2021-21175: Inappropriate implementation in Site isolation

Published Nov 7, 2020
·
Updated

Inappropriate implementation in Site isolation in Google Chrome prior to 89.0.4389.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

Credit

Jun Kokatsu, Microsoft Browser Vulnerability Research

Affected Software

28 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
alpine/qt5-qtwebengine<5.15.3_git20200401-r0
5.15.3_git20200401-r0
alpine/qt5-qtwebengine<5.15.3_git20200401-r0
5.15.3_git20200401-r0
alpine/qt5-qtwebengine<5.15.3_git20200401-r0
5.15.3_git20200401-r0
alpine/qt5-qtwebengine<5.15.3_git20200401-r0
5.15.3_git20200401-r0
alpine/qt5-qtwebengine<5.15.3_git20200401-r0
5.15.3_git20200401-r0
alpine/qt5-qtwebengine<5.15.3_git20200401-r0
5.15.3_git20200401-r0
alpine/qt5-qtwebengine<5.15.3_git20200401-r0
5.15.3_git20200401-r0
alpine/qt5-qtwebengine<5.15.3_git20200401-r0
5.15.3_git20200401-r0
alpine/qt5-qtwebengine<5.15.3_git20200401-r0
5.15.3_git20200401-r0
alpine/qt5-qtwebengine<5.15.3_git20200401-r0
5.15.3_git20200401-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
  4. Upgrade

    Upgrade alpine/qt5-qtwebengine to a version that resolves this vulnerability.

    Fixed in 5.15.3_git20200401-r0

Event History

Nov 7, 2020
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
RemedyDescriptionSeverityWeaknessAffected 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-2021-21175?

CVE-2021-21175 has a medium severity rating due to its potential to leak cross-origin data.

2

How do I fix CVE-2021-21175?

To fix CVE-2021-21175, upgrade to Chrome version 90.0.4430.212 or higher.

3

What versions of Google Chrome are affected by CVE-2021-21175?

CVE-2021-21175 affects Google Chrome versions prior to 89.0.4389.72.

4

Can CVE-2021-21175 be exploited remotely?

Yes, CVE-2021-21175 can be exploited remotely via a crafted HTML page.

5

What impact does CVE-2021-21175 have on users?

CVE-2021-21175 allows attackers to potentially access sensitive cross-origin data from users.

Company

Resources

Contact

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