CVE-2021-4056: Type Confusion in loader

Published Oct 18, 2021
·
Updated

Type confusion in loader in Google Chrome prior to 96.0.4664.93 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Credit

@@__R0ng(360 Alpha Lab)

Affected Software

6 affected componentsFixes available
Google Chrome<96.0.4664.93
96.0.4664.93
Google Chrome<96.0.4664.93
Fedoraproject Fedora=34
Debian Debian Linux=10.0
Debian Debian Linux=11.0
debian/chromium
150.0.7871.100-1~deb12u1156.0.8078.79-1~deb12u1150.0.7871.181-1~deb13u1156.0.8078.79-1~deb13u1156.0.8078.79-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 96.0.4664.93
  2. Upgrade

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

    Fixed in 150.0.7871.100-1~deb12u1Fixed in 156.0.8078.79-1~deb12u1Fixed in 150.0.7871.181-1~deb13u1Fixed in 156.0.8078.79-1~deb13u1Fixed in 156.0.8078.79-1

Event History

Oct 18, 2021
CVE Published
12:00 AM
Dec 23, 2021
CVE Published
via MITRE·12:45 AM
Data Sourced
via MITRE·12:45 AM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2021-4056?

CVE-2021-4056 has a high severity rating as it allows for potential heap corruption exploitation.

2

How do I fix CVE-2021-4056?

To fix CVE-2021-4056, update Google Chrome or Chromium to version 96.0.4664.93 or later.

3

Which versions of Google Chrome are affected by CVE-2021-4056?

CVE-2021-4056 affects Google Chrome versions before 96.0.4664.93.

4

Can CVE-2021-4056 be exploited by a remote attacker?

Yes, CVE-2021-4056 can potentially be exploited by a remote attacker through a crafted HTML page.

5

Are any Linux distributions affected by CVE-2021-4056?

Yes, Debian and Fedora Linux distributions with affected versions of Chromium or Chrome are at risk from CVE-2021-4056.

Contact

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