CVE-2021-4120 snapd could be made to bypass intended access restrictions through snap content interfaces and layout paths

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...

CVE-2021-44730

CVE-2021-44730 affects snapd: 2.54.2 did not validate the location of the snap-confine binary, enabling a local attacker to hardlink it elsewhere and cause snap-confine to execute arbitrary binaries, achieving privilege escalation. Affected systems may gain root/privilege escalation locally. Reme...

CVE-2021-44730 snapd could be made to escalate privileges and run programs as administrator

snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and...