Vulnerability · Published Jan 8, 2021 · Assigned by Chrome
CVE-2021-21111
Critical 9.6
In plain English
A critical-severity security flaw in Chrome from Google. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.6Critical
Exploit odds (30 days)1.1%top 34.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Insufficient policy enforcement in WebUI in Google Chrome prior to 87.0.4280.141 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | chromium | 87.0.4280.141-0.1 | DEBIAN-CVE-2021-21111 |
| Debian:13 | chromium | 87.0.4280.141-0.1 | DEBIAN-CVE-2021-21111 |
| Debian:14 | chromium | 87.0.4280.141-0.1 | DEBIAN-CVE-2021-21111 |
Affected products (as reported)
References
- https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop.html x_refsource_MISC
- https://crbug.com/1149125 x_refsource_MISC
- GLSA-202101-05 vendor-advisory, x_refsource_GENTOO
- DSA-4832 vendor-advisory, x_refsource_DEBIAN
- FEDORA-2021-79926272ce vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-d9faeff8eb vendor-advisory, x_refsource_FEDORA