CVE-2021-4063: Use after free in developer tools

Published Nov 23, 2021
·
Updated

Use after free in developer tools in Google Chrome prior to 96.0.4664.93 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Credit

Abdulrahman Alqabandi, Microsoft Browser Vulnerability Research

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

Nov 23, 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-2021-4063?

CVE-2021-4063 is classified as a high-severity vulnerability due to the potential for remote exploitation and heap corruption.

2

What software is affected by CVE-2021-4063?

CVE-2021-4063 affects Google Chrome versions prior to 96.0.4664.93 and various Debian Linux Chromium packages.

3

How do I fix CVE-2021-4063?

To mitigate CVE-2021-4063, update Google Chrome to version 96.0.4664.93 or later, or upgrade to the recommended Debian Linux Chromium versions.

4

What type of vulnerability is CVE-2021-4063?

CVE-2021-4063 is categorized as a use-after-free vulnerability that can lead to memory corruption.

5

Can CVE-2021-4063 be exploited remotely?

Yes, CVE-2021-4063 allows a remote attacker to potentially exploit the vulnerability through a crafted HTML page.

Contact

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