DEBIAN-CVE-2021-4120

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Source
https://security-tracker.debian.org/tracker/CVE-2021-4120
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-4120.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-4120
Upstream
Published
2022-02-17T23:15:07Z
Modified
2025-09-19T07:31:49.356402Z
Summary
[none]
Details

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

References

Affected packages

Debian:11 / snapd

Package

Name
snapd
Purl
pkg:deb/debian/snapd?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.49-1+deb11u1

Affected versions

2.*

2.49-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / snapd

Package

Name
snapd
Purl
pkg:deb/debian/snapd?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.54.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / snapd

Package

Name
snapd
Purl
pkg:deb/debian/snapd?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.54.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / snapd

Package

Name
snapd
Purl
pkg:deb/debian/snapd?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.54.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}