Actively exploited · Published Oct 8, 2021 · Assigned by Chrome
CVE-2021-30632
High 8.8 Exploited
In plain English
A high-severity out-of-bounds write 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 63.2% (higher than 99.2% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by Nov 17, 2021.
Official description
Out of bounds write in V8 in Google Chrome prior to 93.0.4577.82 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 | 93.0.4577.82-r0 | ALPINE-CVE-2021-30632 |
| Alpine:v3.21 | chromium | 93.0.4577.82-r0 | ALPINE-CVE-2021-30632 |
| Alpine:v3.22 | chromium | 93.0.4577.82-r0 | ALPINE-CVE-2021-30632 |
| Alpine:v3.23 | chromium | 93.0.4577.82-r0 | ALPINE-CVE-2021-30632 |
| Alpine:v3.24 | chromium | 93.0.4577.82-r0 | ALPINE-CVE-2021-30632 |
| Debian:12 | chromium | 93.0.4577.82-1 | DEBIAN-CVE-2021-30632 |
| Debian:13 | chromium | 93.0.4577.82-1 | DEBIAN-CVE-2021-30632 |
| Debian:14 | chromium | 93.0.4577.82-1 | DEBIAN-CVE-2021-30632 |
Affected products (as reported)
Weakness: CWE-787 · 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/2021/09/stable-channel-update-for-desktop.html
- https://crbug.com/1247763
- FEDORA-2021-ab09a05562 vendor-advisory
- FEDORA-2021-591b3a2af0 vendor-advisory
- http://packetstormsecurity.com/files/172845/Chrome-JIT-Compiler-Type-Confusion.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30632 government-resource