CVE-2021-44730

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 2.54.3+21.10.1

References

Affected packages

Git / github.com/snapcore/snapd

Affected ranges

Type

GIT

Repo

https://github.com/snapcore/snapd

Events

Introduced

Last affected

f6ff602cae4755eb38d1bbb20fa15752cb3b763a

Database specific

{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.54.2"
        }
    ]
}

Affected versions

0.*

0.1-0ubuntu1

0.2

0.2.10

0.2.11

0.2.12

0.2.13

0.2.3

0.2.4

0.2.8

0.2.9

1.*

1.0-0ubuntu1

1.0.1

1.0.1-0ubuntu1

1.0.10

1.0.11

1.0.12

1.0.13

1.0.14

1.0.15

1.0.16

1.0.17

1.0.2

1.0.20

1.0.21

1.0.22

1.0.23

1.0.24

1.0.25

1.0.25.1

1.0.26

1.0.27

1.0.28

1.0.29

1.0.3

1.0.30

1.0.31

1.0.32

1.0.33

1.0.34

1.0.35

1.0.36

1.0.37

1.0.38

1.0.39

1.0.4

1.0.40

1.0.41

1.0.42

1.0.42.1

1.0.43

1.0.44

1.0.5

1.0.6

1.0.8

1.0.9

1.1-0ubuntu1

1.1.1-0ubuntu1

1.1.2-0ubuntu1

1.2-0ubuntu1

1.3ubuntu1

1.4ubuntu1

1.5ubuntu1

1.6ubuntu1

1.7.2+20160113ubuntu1

1.7.2+20160204ubuntu1

1.7.2+20160223ubuntu1

1.7.2ubuntu1

1.7.3+20160225ubuntu1

1.7.3+20160303ubuntu1

1.7.3+20160303ubuntu2

1.7.3+20160303ubuntu3

1.7.3+20160303ubuntu4

1.7.3+20160308ubuntu1

1.7.3+20160310ubuntu1

1.7ubuntu1

1.9

1.9.1

1.9.2

1.9.3

1.9.4

2.*

2.0

2.0.10

2.0.3

2.0.4

2.0.5

2.0.6

2.0.7

2.0.8

2.0.8.1

2.0.9

2.11

2.12

2.13

2.14

2.14.1

2.14.2.16.04

2.15

2.15.1

2.15.2

2.17

2.17.1

2.18

2.18.1

2.19

2.20

2.20.1

2.21

2.22

2.22.1

2.22.2

2.22.3

2.22.4

2.22.5

2.22.6

2.22.7

2.23

2.23.1

2.24

2.25

2.26

2.26.1

2.26.10

2.26.13

2.26.14

2.26.2

2.26.3

2.26.4

2.26.5

2.26.6

2.26.8

2.26.9

2.27

2.27.1

2.27.2

2.27.3

2.27.4

2.27.5

2.27.6

2.28

2.28.1

2.28.2

2.28.3

2.28.4

2.28.5

2.29

2.29.1

2.29.2

2.29.3

2.29.3.1

2.29.4

2.29.4.1

2.30

2.31

2.31.1

2.31.2

2.32

2.32.1

2.32.2

2.32.3

2.32.3.2

2.32.4

2.32.5

2.32.6

2.32.7

2.32.8

2.32.9

2.33

2.33.1

2.34

2.34.1

2.34.2

2.34.3

2.35

2.35.1

2.35.2

2.35.4

2.35.5

2.36

2.36.1

2.36.2

2.36.3

2.37

2.37.1

2.37.2

2.37.3

2.37.4

2.38

2.38.1

2.39

2.39.1

2.39.2

2.39.3

2.40

2.41

2.41.pre1

2.42

2.42.1

2.42.2

2.42.3

2.42.4

2.42.5

2.43

2.43.1

2.43.2

2.43.3

2.44

2.44.1

2.44.2

2.44.3

2.44.4

2.44.5

2.45

2.45.1

2.45.2

2.45.3

2.45.3.1

2.46

2.46.1

2.47

2.47.1

2.48

2.48.1

2.48.2

2.49

2.49.1

2.49.2

2.50

2.50.1

2.51

2.51.1

2.51.2

2.51.3

2.51.4

2.51.5

2.51.6

2.51.7

2.52

2.52.1

2.53

2.53.1

2.53.2

2.53.3

2.53.4

2.54

2.54.1

2.54.2

Other

ppa

untagged-ec50ee5bfb45daefc236

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-44730.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "18.04"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "20.04"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "21.10"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "34"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "35"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "10.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "11.0"
            }
        ]
    }
]