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CVE-2021-21202

Published: 26 April 2021

Use after free in extensions in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.

Notes

AuthorNote
alexmurray
The Debian chromium source package is called chromium-browser in
Ubuntu
mdeslaur
starting with Ubuntu 19.10, the chromium-browser package is just
a script that installs the Chromium snap

Priority

Medium

Cvss 3 Severity Score

8.6

Score breakdown

Status

Package Release Status
chromium-browser
Launchpad, Ubuntu, Debian
xenial
Released (90.0.4430.72-0ubuntu0.16.04.1)
focal Not vulnerable
(code not present)
groovy Not vulnerable
(code not present)
hirsute Not vulnerable
(code not present)
trusty Does not exist

upstream
Released
bionic
Released (90.0.4430.72-0ubuntu0.18.04.1)

Severity score breakdown

Parameter Value
Base score 8.6
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Changed
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H