USN-3917-1

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Source
https://ubuntu.com/security/notices/USN-3917-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3917-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-3917-1
Upstream
Related
Published
2019-03-21T20:46:02Z
Modified
2026-02-10T04:41:29Z
Summary
snapd vulnerability
Details

The snapd default seccomp filter for strict mode snaps blocks the use of the ioctl() system call when used with TIOCSTI as the second argument to the system call. Jann Horn discovered that this restriction could be circumvented on 64 bit architectures. A malicious snap could exploit this to bypass intended access restrictions to insert characters into the terminal's input queue. On Ubuntu, snapd typically will have already automatically refreshed itself to snapd 2.37.4 which is unaffected.

References

Affected packages

Ubuntu:14.04:LTS / snapd

Package

Name
snapd
Purl
pkg:deb/ubuntu/snapd@2.37.4~14.04.1?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.37.4~14.04.1

Affected versions

2.*
2.21~14.04.2
2.22.2~14.04
2.22.3~14.04
2.22.6~14.04
2.23.1~14.04
2.24.1~14.04
2.25~14.04
2.26.10~14.04
2.27.5~14.04
2.28.5~14.04
2.29.4.2~14.04
2.32.3.2~14.04
2.32.9~14.04
2.33.1~14.04
2.34.2~14.04
2.34.2~14.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.37.4~14.04.1",
            "binary_name": "golang-github-snapcore-snapd-dev"
        },
        {
            "binary_version": "2.37.4~14.04.1",
            "binary_name": "golang-github-ubuntu-core-snappy-dev"
        },
        {
            "binary_version": "2.37.4~14.04.1",
            "binary_name": "snap-confine"
        },
        {
            "binary_version": "2.37.4~14.04.1",
            "binary_name": "snapd"
        },
        {
            "binary_version": "2.37.4~14.04.1",
            "binary_name": "snapd-xdg-open"
        },
        {
            "binary_version": "2.37.4~14.04.1",
            "binary_name": "ubuntu-core-launcher"
        },
        {
            "binary_version": "2.37.4~14.04.1",
            "binary_name": "ubuntu-core-snapd-units"
        },
        {
            "binary_version": "2.37.4~14.04.1",
            "binary_name": "ubuntu-snappy"
        },
        {
            "binary_version": "2.37.4~14.04.1",
            "binary_name": "ubuntu-snappy-cli"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3917-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:14.04:LTS",
    "cves": [
        {
            "id": "CVE-2019-7303",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:16.04:LTS / snapd

Package

Name
snapd
Purl
pkg:deb/ubuntu/snapd@2.37.4ubuntu0.1?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.37.4ubuntu0.1

Affected versions

1.*
1.9
1.9.1.1
1.9.2
2.*
2.0
2.0.1
2.0.2
2.0.3
2.0.5
2.0.8
2.0.9
2.0.10
2.11+0.16.04
2.12+0.16.04
2.13
2.14.2~16.04
2.15.2ubuntu1
2.16ubuntu3
2.17.1ubuntu1
2.20.1ubuntu1
2.21
2.22.2
2.22.3
2.22.6
2.23.1
2.24.1
2.25
2.26.10
2.27.5
2.28.5
2.29.4.2
2.32.3.2
2.32.9
2.33.1ubuntu2
2.34.2
2.34.2ubuntu0.1
2.37.4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.37.4ubuntu0.1",
            "binary_name": "golang-github-snapcore-snapd-dev"
        },
        {
            "binary_version": "2.37.4ubuntu0.1",
            "binary_name": "golang-github-ubuntu-core-snappy-dev"
        },
        {
            "binary_version": "2.37.4ubuntu0.1",
            "binary_name": "snap-confine"
        },
        {
            "binary_version": "2.37.4ubuntu0.1",
            "binary_name": "snapd"
        },
        {
            "binary_version": "2.37.4ubuntu0.1",
            "binary_name": "snapd-xdg-open"
        },
        {
            "binary_version": "2.37.4ubuntu0.1",
            "binary_name": "ubuntu-core-launcher"
        },
        {
            "binary_version": "2.37.4ubuntu0.1",
            "binary_name": "ubuntu-core-snapd-units"
        },
        {
            "binary_version": "2.37.4ubuntu0.1",
            "binary_name": "ubuntu-snappy"
        },
        {
            "binary_version": "2.37.4ubuntu0.1",
            "binary_name": "ubuntu-snappy-cli"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3917-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:16.04:LTS",
    "cves": [
        {
            "id": "CVE-2019-7303",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:18.04:LTS / snapd

Package

Name
snapd
Purl
pkg:deb/ubuntu/snapd@2.37.4+18.04.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.37.4+18.04.1

Affected versions

2.*
2.28.5+17.10
2.29.4.1+18.04
2.29.4.2+18.04
2.31.1+18.04
2.32+18.04~pre5
2.32+18.04~pre6
2.32+18.04
2.32.3.2+18.04
2.32.5+18.04
2.32.8+18.04
2.32.9+18.04
2.33.1+18.04ubuntu2
2.34.2+18.04
2.34.2+18.04.1
2.37.1+18.04
2.37.1.1+18.04
2.37.4+18.04

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.37.4+18.04.1",
            "binary_name": "golang-github-snapcore-snapd-dev"
        },
        {
            "binary_version": "2.37.4+18.04.1",
            "binary_name": "golang-github-ubuntu-core-snappy-dev"
        },
        {
            "binary_version": "2.37.4+18.04.1",
            "binary_name": "snap-confine"
        },
        {
            "binary_version": "2.37.4+18.04.1",
            "binary_name": "snapd"
        },
        {
            "binary_version": "2.37.4+18.04.1",
            "binary_name": "snapd-xdg-open"
        },
        {
            "binary_version": "2.37.4+18.04.1",
            "binary_name": "ubuntu-core-launcher"
        },
        {
            "binary_version": "2.37.4+18.04.1",
            "binary_name": "ubuntu-core-snapd-units"
        },
        {
            "binary_version": "2.37.4+18.04.1",
            "binary_name": "ubuntu-snappy"
        },
        {
            "binary_version": "2.37.4+18.04.1",
            "binary_name": "ubuntu-snappy-cli"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3917-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2019-7303",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}