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CVE-2021-4120

Published: 17 February 2022

snapd 2.54.2 fails to perform sufficient validation of snap content interface and layout paths, resulting in the ability for snaps to inject arbitrary AppArmor policy rules via malformed content interface and layout declarations and hence escape strict snap confinement. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

Priority

Medium

CVSS 3 base score: 8.2

Status

Package Release Status
snapd
Launchpad, Ubuntu, Debian
bionic
Released (2.54.3+18.04)
focal
Released (2.54.3+20.04)
hirsute Ignored
(reached end-of-life)
impish
Released (2.54.3+21.10.1)
trusty
Released (2.54.3+14.04~esm1)
upstream
Released (2.54.3)
xenial
Released (2.54.3+16.04~esm2)