CVE-2021-4062: Heap buffer overflow in BFCache

Published Nov 22, 2021
·
Updated

Heap buffer overflow in BFCache in Google Chrome prior to 96.0.4664.93 allowed a remote attacker who had compromised the renderer process to potentially exploit heap corruption via a crafted HTML page.

Credit

Leecraso(360 Alpha Lab), Guang Gong(360 Alpha Lab)

Affected Software

16 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
alpine/qt5-qtwebengine<5.15.3_git20211112-r1
5.15.3_git20211112-r1
alpine/qt5-qtwebengine<5.15.3_git20211127-r1
5.15.3_git20211127-r1
alpine/qt5-qtwebengine<5.15.3_git20211127-r1
5.15.3_git20211127-r1
alpine/qt5-qtwebengine<5.15.3_git20211127-r1
5.15.3_git20211127-r1
alpine/qt5-qtwebengine<5.15.3_git20211127-r1
5.15.3_git20211127-r1
alpine/qt5-qtwebengine<5.15.3_git20211127-r1
5.15.3_git20211127-r1
alpine/qt5-qtwebengine<5.15.3_git20211127-r1
5.15.3_git20211127-r1
alpine/qt5-qtwebengine<5.15.3_git20211127-r1
5.15.3_git20211127-r1
alpine/qt5-qtwebengine<5.15.3_git20211127-r1
5.15.3_git20211127-r1
alpine/qt5-qtwebengine<5.15.3_git20211127-r1
5.15.3_git20211127-r1
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 alpine/qt5-qtwebengine to a version that resolves this vulnerability.

    Fixed in 5.15.3_git20211112-r1
  3. Upgrade

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

    Fixed in 5.15.3_git20211127-r1
  4. 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 22, 2021
CVE Published
12:00 AM
Dec 23, 2021
CVE Published
via MITRE·12:45 AM
Data Sourced
via MITRE·12:45 AM
DescriptionWeakness
Data Sourced
via NVD·01:15 AM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·01:15 AM
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-2021-4062?

CVE-2021-4062 has a severity rating of high due to the potential for heap corruption that could be exploited by attackers.

2

How do I fix CVE-2021-4062?

To fix CVE-2021-4062, update Google Chrome to version 96.0.4664.93 or later.

3

What applications are affected by CVE-2021-4062?

CVE-2021-4062 affects Google Chrome versions prior to 96.0.4664.93 and certain versions of Chromium on Debian.

4

Can CVE-2021-4062 lead to remote code execution?

Yes, CVE-2021-4062 can potentially allow remote code execution due to heap buffer overflow.

5

Is there a workaround for CVE-2021-4062?

There are no known workarounds for CVE-2021-4062, so updating to the latest version is recommended.

Company

Resources

Contact

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