CVE-2021-37965: Inappropriate implementation in Background Fetch API

Published Aug 13, 2021
·
Updated

Inappropriate implementation in Background Fetch API in Google Chrome prior to 94.0.4606.54 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

Credit

Maurice Dauer

Affected Software

7 affected componentsFixes available
debian/chromium<=90.0.4430.212-1~deb10u1
116.0.5845.180-1~deb11u1118.0.5993.70-1~deb11u1116.0.5845.180-1~deb12u1118.0.5993.70-1~deb12u1118.0.5993.70-1
Google Chrome<94.0.4606.54
94.0.4606.54
Google Chrome<94.0.4606.54
Fedoraproject Fedora=33
Fedoraproject Fedora=35
Debian Debian Linux=10.0
Debian Debian Linux=11.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed 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 94.0.4606.54

Event History

Aug 13, 2021
CVE Published
12:00 AM
Oct 8, 2021
CVE Published
via MITRE·09:30 PM
Data Sourced
via MITRE·09:30 PM
DescriptionWeakness
Data Sourced
via NVD·10:15 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2021-37965?

CVE-2021-37965 is classified as a high-severity vulnerability due to the potential for remote attackers to leak sensitive cross-origin data.

2

How do I fix CVE-2021-37965?

To fix CVE-2021-37965, update your Google Chrome or Chromium to version 94.0.4606.54 or later.

3

Which versions of Chrome are affected by CVE-2021-37965?

CVE-2021-37965 affects Google Chrome versions prior to 94.0.4606.54.

4

Can CVE-2021-37965 be exploited remotely?

Yes, CVE-2021-37965 can be exploited remotely through a crafted HTML page.

5

Is CVE-2021-37965 specific to Chrome only?

While CVE-2021-37965 primarily affects Google Chrome, it may also impact Chromium versions below 94.0.4606.54.

Contact

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