CVE-2021-30544: Use after free in BFCache

Published May 24, 2021
·
Updated

Use after free in BFCache in Google Chrome prior to 91.0.4472.101 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Credit

Rong Jian(360 Alpha Lab), Guang Gong(360 Alpha Lab)

Affected Software

25 affected componentsFixes available
Google Chrome<91.0.4472.101
91.0.4472.101
Google Chrome<91.0.4472.101
Fedoraproject Fedora=33
Fedoraproject Fedora=34
alpine/chromium<91.0.4472.101-r0
91.0.4472.101-r0
alpine/chromium<91.0.4472.101-r0
91.0.4472.101-r0
alpine/chromium<91.0.4472.101-r0
91.0.4472.101-r0
alpine/chromium<91.0.4472.101-r0
91.0.4472.101-r0
alpine/chromium<91.0.4472.101-r0
91.0.4472.101-r0
alpine/chromium<91.0.4472.101-r0
91.0.4472.101-r0
alpine/chromium<91.0.4472.101-r0
91.0.4472.101-r0
alpine/chromium<91.0.4472.101-r0
91.0.4472.101-r0
alpine/chromium<91.0.4472.101-r0
91.0.4472.101-r0
alpine/chromium<91.0.4472.101-r0
91.0.4472.101-r0
alpine/chromium<91.0.4472.101-r0
91.0.4472.101-r0
alpine/qt5-qtwebengine<5.15.3_git20211006-r0
5.15.3_git20211006-r0
alpine/qt5-qtwebengine<5.15.3_git20210510-r2
5.15.3_git20210510-r2
alpine/qt5-qtwebengine<5.15.3_git20210510-r2
5.15.3_git20210510-r2
alpine/qt5-qtwebengine<5.15.3_git20210510-r2
5.15.3_git20210510-r2
alpine/qt5-qtwebengine<5.15.3_git20210510-r2
5.15.3_git20210510-r2
alpine/qt5-qtwebengine<5.15.3_git20210510-r2
5.15.3_git20210510-r2
alpine/qt5-qtwebengine<5.15.3_git20210510-r2
5.15.3_git20210510-r2
alpine/qt5-qtwebengine<5.15.3_git20210510-r2
5.15.3_git20210510-r2
alpine/qt5-qtwebengine<5.15.3_git20210510-r2
5.15.3_git20210510-r2
alpine/qt5-qtwebengine<5.15.3_git20210510-r2
5.15.3_git20210510-r2

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 91.0.4472.101
  2. Upgrade

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

    Fixed in 91.0.4472.101-r0
  3. Upgrade

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

    Fixed in 5.15.3_git20211006-r0
  4. Upgrade

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

    Fixed in 5.15.3_git20210510-r2

Event History

May 24, 2021
CVE Published
12:00 AM
Jun 15, 2021
CVE Published
via MITRE·09:40 PM
Data Sourced
via MITRE·09:40 PM
DescriptionWeakness
Data Sourced
via NVD·10:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·10:15 PM
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-2021-30544?

CVE-2021-30544 is classified as a high-severity vulnerability affecting Google Chrome.

2

How do I fix CVE-2021-30544?

To fix CVE-2021-30544, update Google Chrome to version 91.0.4472.101 or later.

3

What does CVE-2021-30544 exploit?

CVE-2021-30544 exploits a use after free vulnerability in the BFCache mechanism in Google Chrome.

4

Which versions of Google Chrome are affected by CVE-2021-30544?

CVE-2021-30544 affects Google Chrome versions prior to 91.0.4472.101.

5

Can CVE-2021-30544 allow remote code execution?

Yes, CVE-2021-30544 can potentially allow a remote attacker to exploit heap corruption.

Company

Resources

Contact

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