Actively exploited · Published Oct 8, 2021 · Assigned by Chrome
CVE-2021-37975
High 8.8 Exploited
In plain English
A high-severity use-after-free 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 34.9% (higher than 98% 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
Use after free in V8 in Google Chrome prior to 94.0.4606.71 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 | qt5-qtwebengine | 5.15.3_git20211006-r3 | ALPINE-CVE-2021-37975 |
| Alpine:v3.21 | qt5-qtwebengine | 5.15.3_git20211006-r3 | ALPINE-CVE-2021-37975 |
| Alpine:v3.22 | qt5-qtwebengine | 5.15.3_git20211006-r3 | ALPINE-CVE-2021-37975 |
| Alpine:v3.23 | qt5-qtwebengine | 5.15.3_git20211006-r3 | ALPINE-CVE-2021-37975 |
| Debian:12 | chromium | 97.0.4692.71-0.1 | DEBIAN-CVE-2021-37975 |
| Debian:13 | chromium | 97.0.4692.71-0.1 | DEBIAN-CVE-2021-37975 |
| Debian:14 | chromium | 97.0.4692.71-0.1 | DEBIAN-CVE-2021-37975 |
Affected products (as reported)
Weakness: CWE-416 · 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_30.html
- https://crbug.com/1252918
- FEDORA-2021-116eff380f vendor-advisory
- FEDORA-2021-5ffabdc080 vendor-advisory
- FEDORA-2021-5093f11905 vendor-advisory
- DSA-5046 vendor-advisory
- http://packetstormsecurity.com/files/172847/Chrome-V8-Logic-Bug-Use-After-Free.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-37975 government-resource