This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2021-4120 →

DEBIAN-CVE-2021-4120

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...

Original description

The description as published by the source.

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

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 snapd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.54.3-1"}]}]

Debian:13 snapd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.54.3-1"}]}]

Debian:14 snapd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.54.3-1"}]}]

References

advisory security-tracker.debian.org