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CVE-2021-37973

Published: 8 October 2021

Use after free in Portals in Google Chrome prior to 94.0.4606.61 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

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
sbeattie
active exploitation in the wild

Priority

High

Cvss 3 Severity Score

9.6

Score breakdown

Status

Package Release Status
chromium-browser
Launchpad, Ubuntu, Debian
focal Not vulnerable
(code not present)
impish Not vulnerable
(code not present)
jammy Not vulnerable
(code not present)
trusty Does not exist

xenial Ignored
(end of standard support)
hirsute Not vulnerable
(code not present)
upstream
Released (94.0.4606.61)
bionic
Released (94.0.4606.71-0ubuntu0.18.04.1)

Severity score breakdown

Parameter Value
Base score 9.6
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Changed
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H