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vuln-ubuntu/data/osv/cve/2021/UBUNTU-CVE-2021-3155.json
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{
"schema_version": "1.7.0",
"id": "UBUNTU-CVE-2021-3155",
"details": "snapd 2.54.2 and earlier created ~/snap directories in user home directories without specifying owner-only permissions. This could allow a local attacker to read information that should have been private. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1",
"aliases": [],
"upstream": [
"CVE-2021-3155"
],
"related": [
"USN-5292-1",
"USN-5292-3",
"USN-5292-2"
],
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"published": "2021-01-13T00:00:00Z",
"modified": "2025-10-15T16:50:09Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "snapd",
"purl": "pkg:deb/ubuntu/snapd@2.54.3+16.04~esm2?arch=source&distro=esm-infra/xenial"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.54.3+16.04~esm2"
}
]
}
],
"versions": [
"1.9",
"1.9.1.1",
"1.9.2",
"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",
"2.37.4ubuntu0.1",
"2.38",
"2.39.2",
"2.39.2ubuntu0.2",
"2.40",
"2.42.1",
"2.45.1",
"2.45.1ubuntu0.2",
"2.46.1",
"2.47.1",
"2.48",
"2.48.3"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-snapcore-snapd-dev",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "golang-github-ubuntu-core-snappy-dev",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "snap-confine",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "snapd",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "snapd-xdg-open",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "ubuntu-core-launcher",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "ubuntu-core-snapd-units",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "ubuntu-snappy",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "ubuntu-snappy-cli",
"binary_version": "2.54.3+16.04~esm2"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
},
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "snapd",
"purl": "pkg:deb/ubuntu/snapd@2.54.3+18.04?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.54.3+18.04"
}
]
}
],
"versions": [
"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",
"2.37.4+18.04.1",
"2.38+18.04",
"2.39.2+18.04",
"2.40+18.04",
"2.42.1+18.04",
"2.45.1+18.04",
"2.45.1+18.04.2",
"2.46.1+18.04",
"2.47.1+18.04",
"2.48+18.04",
"2.48.3+18.04",
"2.49.2+18.04",
"2.51.1+18.04",
"2.54.2+18.04ubuntu1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-snapcore-snapd-dev",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "golang-github-ubuntu-core-snappy-dev",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "snap-confine",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "snapd",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "snapd-xdg-open",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "ubuntu-core-launcher",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "ubuntu-core-snapd-units",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "ubuntu-snappy",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "ubuntu-snappy-cli",
"binary_version": "2.54.3+18.04"
}
],
"availability": "No subscription required"
}
},
{
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "snapd",
"purl": "pkg:deb/ubuntu/snapd@2.54.3+20.04.1?arch=source&distro=focal"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.54.3+20.04.1"
}
]
}
],
"versions": [
"2.41+19.10.1",
"2.42.1+20.04",
"2.43.3+git1.8109f8",
"2.44~pre1+20.04",
"2.44+20.04",
"2.44.2+20.04",
"2.44.3+20.04",
"2.45.1+20.04",
"2.45.1+20.04.2",
"2.46.1+20.04",
"2.47.1+20.04",
"2.48+20.04",
"2.48.3+20.04",
"2.49.2+20.04",
"2.51.1+20.04ubuntu2",
"2.54.2+20.04ubuntu2",
"2.54.3+20.04"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-snapcore-snapd-dev",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "golang-github-ubuntu-core-snappy-dev",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "snap-confine",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "snapd",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "snapd-xdg-open",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "ubuntu-core-launcher",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "ubuntu-core-snapd-units",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "ubuntu-snappy",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "ubuntu-snappy-cli",
"binary_version": "2.54.3+20.04.1"
}
],
"availability": "No subscription required"
}
}
],
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-3155"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5292-1"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3155"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5292-3"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5292-2"
}
]
}
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