Actively exploited · Published Apr 26, 2021 · Assigned by Chrome
CVE-2021-21224
High 8.8 Exploited
In plain English
A high-severity type confusion 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 84.2% (higher than 99.7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)84.2%top 0.3% 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
Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | qt5-qtwebengine | 5.15.3_git20210510-r0 | ALPINE-CVE-2021-21224 |
| Alpine:v3.21 | qt5-qtwebengine | 5.15.3_git20210510-r0 | ALPINE-CVE-2021-21224 |
| Alpine:v3.22 | qt5-qtwebengine | 5.15.3_git20210510-r0 | ALPINE-CVE-2021-21224 |
| Alpine:v3.23 | qt5-qtwebengine | 5.15.3_git20210510-r0 | ALPINE-CVE-2021-21224 |
| Debian:12 | chromium | 90.0.4430.85-1 | DEBIAN-CVE-2021-21224 |
| Debian:13 | chromium | 90.0.4430.85-1 | DEBIAN-CVE-2021-21224 |
| Debian:14 | chromium | 90.0.4430.85-1 | DEBIAN-CVE-2021-21224 |
Affected products (as reported)
Weakness: CWE-843 · 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/2021/04/stable-channel-update-for-desktop_20.html x_refsource_MISC
- https://crbug.com/1195777 x_refsource_MISC
- DSA-4906 vendor-advisory, x_refsource_DEBIAN
- GLSA-202104-08 vendor-advisory, x_refsource_GENTOO
- FEDORA-2021-c3754414e7 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-ff893e12c5 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-35d2bb4627 vendor-advisory, x_refsource_FEDORA
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21224 government-resource