Actively exploited · Published Mar 9, 2021 · Assigned by Chrome
CVE-2021-21166
High 8.8 Exploited
In plain English
A high-severity race condition in Chrome from Google. Attackers are actively exploiting it in the wild (listed by CISA on November 3, 2021). The chance it is exploited in the next 30 days is estimated at 24.0% (higher than 98% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)24.0%top 2.1% of all CVEs
Exploited in the wildYesCISA KEV since Nov 3, 2021
Attack toolingNoneno public tooling known
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by Nov 17, 2021.
Official description
Data race in audio in Google Chrome prior to 89.0.4389.72 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | chromium | 89.0.4389.72-r0 | ALPINE-CVE-2021-21166 |
| Alpine:v3.21 | chromium | 89.0.4389.72-r0 | ALPINE-CVE-2021-21166 |
| Alpine:v3.22 | chromium | 89.0.4389.72-r0 | ALPINE-CVE-2021-21166 |
| Alpine:v3.23 | chromium | 89.0.4389.72-r0 | ALPINE-CVE-2021-21166 |
| Alpine:v3.24 | chromium | 89.0.4389.72-r0 | ALPINE-CVE-2021-21166 |
| Alpine:v3.20 | qt5-qtwebengine | 5.15.3_git20200401-r0 | ALPINE-CVE-2021-21166 |
| Alpine:v3.21 | qt5-qtwebengine | 5.15.3_git20200401-r0 | ALPINE-CVE-2021-21166 |
| Alpine:v3.22 | qt5-qtwebengine | 5.15.3_git20200401-r0 | ALPINE-CVE-2021-21166 |
| Alpine:v3.23 | qt5-qtwebengine | 5.15.3_git20200401-r0 | ALPINE-CVE-2021-21166 |
| Debian:12 | chromium | 89.0.4389.82-1 | DEBIAN-CVE-2021-21166 |
| Debian:13 | chromium | 89.0.4389.82-1 | DEBIAN-CVE-2021-21166 |
| Debian:14 | chromium | 89.0.4389.82-1 | DEBIAN-CVE-2021-21166 |
Affected products (as reported)
Weakness: CWE-362 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html x_refsource_MISC
- https://crbug.com/1177465 x_refsource_MISC
- FEDORA-2021-c88a96bd4b vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-4740239e28 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-78547312f2 vendor-advisory, x_refsource_FEDORA
- DSA-4886 vendor-advisory, x_refsource_DEBIAN
- GLSA-202104-08 vendor-advisory, x_refsource_GENTOO
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21166 government-resource