CVE-2021-4120
High
Description
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
SeverityHigh
CVSS8.2
Exploit probability—
Product
Canonical Snapd
PublishedFeb 17, 2022
First seenFeb 17, 2022
Weakness typeCWE-20Improper input validation
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| canonical snapd | v ≤ 2.54.2 | — |
| canonical ubuntu_linux | 18.04, 20.04, 21.10 | — |
| fedoraproject fedora | 34, 35 | — |
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