{
  "cveId": "CVE-2021-3155",
  "url": "https://patchblox.com/security/cve/CVE-2021-3155",
  "summary": "CVE-2021-3155 is fixed in 9 products on 1 platform, first by golang-github-snapcore-snapd-dev 2.54.3\u002B18.04, released February 17, 2022. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "snapd: snapd 2.54.2 and earlier created ~/snap directories in user home directories without specifying owner-only permissions",
  "description": "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\u002B18.04, 2.54.3\u002B20.04 and 2.54.3\u002B21.10.1",
  "published": "2021-01-12T16:00:00Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
  "epss": 0.0026,
  "epssPercentile": 0.17851,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "golang-github-snapcore-snapd-dev",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.54.3\u002B18.04",
      "fix": "golang-github-snapcore-snapd-dev 2.54.3\u002B18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-golang-github-snapcore-snapd-dev-2.54.3-18.04",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "golang-github-snapcore-snapd-dev",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.54.3\u002B20.04.1",
      "fix": "golang-github-snapcore-snapd-dev 2.54.3\u002B20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-golang-github-snapcore-snapd-dev-2.54.3-20.04.1",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "golang-github-ubuntu-core-snappy-dev",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.54.3\u002B18.04",
      "fix": "golang-github-ubuntu-core-snappy-dev 2.54.3\u002B18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-golang-github-ubuntu-core-snappy-dev-2.54.3-18.04",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "golang-github-ubuntu-core-snappy-dev",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.54.3\u002B20.04.1",
      "fix": "golang-github-ubuntu-core-snappy-dev 2.54.3\u002B20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-golang-github-ubuntu-core-snappy-dev-2.54.3-20.04.1",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "snap-confine",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.54.3\u002B18.04",
      "fix": "snap-confine 2.54.3\u002B18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-snap-confine-2.54.3-18.04",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "snap-confine",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.54.3\u002B20.04.1",
      "fix": "snap-confine 2.54.3\u002B20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-snap-confine-2.54.3-20.04.1",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "snapd",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2.54-1",
      "fix": "DEBIAN-CVE-2021-3155",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3155",
      "released": "2022-02-17T23:15:07Z"
    },
    {
      "platform": "linux",
      "product": "snapd",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2.54-1",
      "fix": "DEBIAN-CVE-2021-3155",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3155",
      "released": "2022-02-17T23:15:07Z"
    },
    {
      "platform": "linux",
      "product": "snapd",
      "release": "Debian 14",
      "fixedVersion": "2.54-1",
      "fix": "DEBIAN-CVE-2021-3155",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3155",
      "released": "2022-02-17T23:15:07Z"
    },
    {
      "platform": "linux",
      "product": "snapd",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.54.3\u002B18.04",
      "fix": "snapd 2.54.3\u002B18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-snapd-2.54.3-18.04",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "snapd",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.54.3\u002B20.04.1",
      "fix": "snapd 2.54.3\u002B20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-snapd-2.54.3-20.04.1",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "snapd-xdg-open",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.54.3\u002B18.04",
      "fix": "snapd-xdg-open 2.54.3\u002B18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-snapd-xdg-open-2.54.3-18.04",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "snapd-xdg-open",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.54.3\u002B20.04.1",
      "fix": "snapd-xdg-open 2.54.3\u002B20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-snapd-xdg-open-2.54.3-20.04.1",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-core-launcher",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.54.3\u002B18.04",
      "fix": "ubuntu-core-launcher 2.54.3\u002B18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-ubuntu-core-launcher-2.54.3-18.04",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-core-launcher",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.54.3\u002B20.04.1",
      "fix": "ubuntu-core-launcher 2.54.3\u002B20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-ubuntu-core-launcher-2.54.3-20.04.1",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-core-snapd-units",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.54.3\u002B18.04",
      "fix": "ubuntu-core-snapd-units 2.54.3\u002B18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-ubuntu-core-snapd-units-2.54.3-18.04",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-core-snapd-units",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.54.3\u002B20.04.1",
      "fix": "ubuntu-core-snapd-units 2.54.3\u002B20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-ubuntu-core-snapd-units-2.54.3-20.04.1",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-snappy",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.54.3\u002B18.04",
      "fix": "ubuntu-snappy 2.54.3\u002B18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-ubuntu-snappy-2.54.3-18.04",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-snappy",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.54.3\u002B20.04.1",
      "fix": "ubuntu-snappy 2.54.3\u002B20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-ubuntu-snappy-2.54.3-20.04.1",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-snappy-cli",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.54.3\u002B18.04",
      "fix": "ubuntu-snappy-cli 2.54.3\u002B18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-ubuntu-snappy-cli-2.54.3-18.04",
      "released": "2022-02-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-snappy-cli",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.54.3\u002B20.04.1",
      "fix": "ubuntu-snappy-cli 2.54.3\u002B20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-ubuntu-snappy-cli-2.54.3-20.04.1",
      "released": "2022-02-17T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}