CVE-2021-37976: Information leak in core

Published Sep 21, 2021
·
Updated

Google Chromium contains an information disclosure vulnerability within the core memory component that allows a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

Other sources

Inappropriate implementation in Memory in Google Chrome prior to 94.0.4606.71 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page.

Credit

Clément Lecigne(Google TAG), with technical assistance(Sergei Glazunov), Mark Brand(Google Project Zero)

Affected Software

9 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 Chromium
Google Chrome<94.0.4606.71
94.0.4606.71
Google Chrome<94.0.4606.71
Fedoraproject Fedora=33
Fedoraproject Fedora=34
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 94.0.4606.71

Event History

Sep 21, 2021
CVE Published
12:00 AM
Known Exploited
12:00 AM
Oct 8, 2021
CVE Published
via MITRE·09:50 PM
Data Sourced
via MITRE·09:50 PM
DescriptionWeakness
Data Sourced
via NVD·10:15 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is CVE-2021-37976?

CVE-2021-37976 refers to an information disclosure vulnerability in Google Chromium.

2

What is the severity of CVE-2021-37976?

CVE-2021-37976 has a severity rating of 6.5 (Medium).

3

How does CVE-2021-37976 allow an attacker to obtain sensitive information?

CVE-2021-37976 allows a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page.

4

Which software is affected by CVE-2021-37976?

CVE-2021-37976 affects Google Chromium, Google Chrome, Fedora, and Debian Linux.

5

How can I fix CVE-2021-37976?

To fix CVE-2021-37976, update to the patched versions provided by the respective vendors.

Contact

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