ubuntu-cve-2019-11503
Vulnerability from osv_ubuntu
Published
2019-04-24 21:29
Modified
2025-09-08 16:45
Summary
Details

snap-confine as included in snapd before 2.39 did not guard against symlink races when performing the chdir() to the current working directory of the calling user, aka a "cwd restore permission bypass."

Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "golang-github-snapcore-snapd-dev",
            "binary_version": "2.39.2ubuntu0.2"
          },
          {
            "binary_name": "golang-github-ubuntu-core-snappy-dev",
            "binary_version": "2.39.2ubuntu0.2"
          },
          {
            "binary_name": "snap-confine",
            "binary_version": "2.39.2ubuntu0.2"
          },
          {
            "binary_name": "snapd",
            "binary_version": "2.39.2ubuntu0.2"
          },
          {
            "binary_name": "snapd-xdg-open",
            "binary_version": "2.39.2ubuntu0.2"
          },
          {
            "binary_name": "ubuntu-core-launcher",
            "binary_version": "2.39.2ubuntu0.2"
          },
          {
            "binary_name": "ubuntu-core-snapd-units",
            "binary_version": "2.39.2ubuntu0.2"
          },
          {
            "binary_name": "ubuntu-snappy",
            "binary_version": "2.39.2ubuntu0.2"
          },
          {
            "binary_name": "ubuntu-snappy-cli",
            "binary_version": "2.39.2ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "snapd",
        "purl": "pkg:deb/ubuntu/snapd@2.39.2ubuntu0.2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.39.2ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "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"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "golang-github-snapcore-snapd-dev",
            "binary_version": "2.39.2+18.04"
          },
          {
            "binary_name": "golang-github-ubuntu-core-snappy-dev",
            "binary_version": "2.39.2+18.04"
          },
          {
            "binary_name": "snap-confine",
            "binary_version": "2.39.2+18.04"
          },
          {
            "binary_name": "snapd",
            "binary_version": "2.39.2+18.04"
          },
          {
            "binary_name": "snapd-xdg-open",
            "binary_version": "2.39.2+18.04"
          },
          {
            "binary_name": "ubuntu-core-launcher",
            "binary_version": "2.39.2+18.04"
          },
          {
            "binary_name": "ubuntu-core-snapd-units",
            "binary_version": "2.39.2+18.04"
          },
          {
            "binary_name": "ubuntu-snappy",
            "binary_version": "2.39.2+18.04"
          },
          {
            "binary_name": "ubuntu-snappy-cli",
            "binary_version": "2.39.2+18.04"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "snapd",
        "purl": "pkg:deb/ubuntu/snapd@2.39.2+18.04?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.39.2+18.04"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "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"
      ]
    }
  ],
  "aliases": [],
  "details": "snap-confine as included in snapd before 2.39 did not guard against symlink races when performing the chdir() to the current working directory of the calling user, aka a \"cwd restore permission bypass.\"",
  "id": "UBUNTU-CVE-2019-11503",
  "modified": "2025-09-08T16:45:24Z",
  "published": "2019-04-24T21:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-11503"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/snapcore/snapd/pull/6642"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2019/04/18/4"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-11503"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-11503"
  ]
}



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