usn-5103-1
Vulnerability from osv_ubuntu
Published
2021-10-04 22:48
Modified
2026-06-25 10:46
Summary
docker.io vulnerability
Details

Lei Wang and Ruizhi Xiao discovered that the Moby Docker engine in Docker incorrectly allowed the docker cp command to make permissions changes in the host filesystem in some situations. A local attacker could possibly use to this to expose sensitive information or gain administrative privileges.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-41089",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "docker.io",
            "binary_version": "18.09.7-0ubuntu1~16.04.9+esm1"
          },
          {
            "binary_name": "golang-docker-dev",
            "binary_version": "18.09.7-0ubuntu1~16.04.9+esm1"
          },
          {
            "binary_name": "golang-github-docker-docker-dev",
            "binary_version": "18.09.7-0ubuntu1~16.04.9+esm1"
          },
          {
            "binary_name": "vim-syntax-docker",
            "binary_version": "18.09.7-0ubuntu1~16.04.9+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "docker.io",
        "purl": "pkg:deb/ubuntu/docker.io@18.09.7-0ubuntu1~16.04.9+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "18.09.7-0ubuntu1~16.04.9+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.2~dfsg1-1ubuntu4",
        "1.10.2-0ubuntu3",
        "1.10.2-0ubuntu4",
        "1.10.3-0ubuntu1",
        "1.10.3-0ubuntu4",
        "1.10.3-0ubuntu5",
        "1.10.3-0ubuntu6",
        "1.11.2-0ubuntu5~16.04",
        "1.12.1-0ubuntu13~16.04.1",
        "1.12.3-0ubuntu4~16.04.2",
        "1.12.6-0ubuntu1~16.04.1",
        "1.13.1-0ubuntu1~16.04.2",
        "17.03.2-0ubuntu2~16.04.1",
        "18.06.1-0ubuntu1~16.04.2",
        "18.06.1-0ubuntu1.2~16.04.1",
        "18.09.2-0ubuntu1~16.04.1",
        "18.09.5-0ubuntu1~16.04.2",
        "18.09.7-0ubuntu1~16.04.1",
        "18.09.7-0ubuntu1~16.04.4",
        "18.09.7-0ubuntu1~16.04.5",
        "18.09.7-0ubuntu1~16.04.6",
        "18.09.7-0ubuntu1~16.04.7"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-41089",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "docker.io",
            "binary_version": "20.10.7-0ubuntu1~18.04.2"
          },
          {
            "binary_name": "golang-docker-dev",
            "binary_version": "20.10.7-0ubuntu1~18.04.2"
          },
          {
            "binary_name": "golang-github-docker-docker-dev",
            "binary_version": "20.10.7-0ubuntu1~18.04.2"
          },
          {
            "binary_name": "vim-syntax-docker",
            "binary_version": "20.10.7-0ubuntu1~18.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "docker.io",
        "purl": "pkg:deb/ubuntu/docker.io@20.10.7-0ubuntu1~18.04.2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "20.10.7-0ubuntu1~18.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.13.1-0ubuntu6",
        "17.03.2-0ubuntu1",
        "17.03.2-0ubuntu3",
        "17.03.2-0ubuntu5",
        "17.12.1-0ubuntu1",
        "18.06.1-0ubuntu1~18.04.1",
        "18.06.1-0ubuntu1.2~18.04.1",
        "18.09.2-0ubuntu1~18.04.1",
        "18.09.5-0ubuntu1~18.04.2",
        "18.09.7-0ubuntu1~18.04.1",
        "18.09.7-0ubuntu1~18.04.3",
        "18.09.7-0ubuntu1~18.04.4",
        "19.03.6-0ubuntu1~18.04.1",
        "19.03.6-0ubuntu1~18.04.2",
        "19.03.6-0ubuntu1~18.04.3",
        "20.10.2-0ubuntu1~18.04.2",
        "20.10.2-0ubuntu1~18.04.3",
        "20.10.7-0ubuntu1~18.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-41089",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "docker.io",
            "binary_version": "20.10.7-0ubuntu1~20.04.2"
          },
          {
            "binary_name": "golang-docker-dev",
            "binary_version": "20.10.7-0ubuntu1~20.04.2"
          },
          {
            "binary_name": "golang-github-docker-docker-dev",
            "binary_version": "20.10.7-0ubuntu1~20.04.2"
          },
          {
            "binary_name": "vim-syntax-docker",
            "binary_version": "20.10.7-0ubuntu1~20.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "docker.io",
        "purl": "pkg:deb/ubuntu/docker.io@20.10.7-0ubuntu1~20.04.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "20.10.7-0ubuntu1~20.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "19.03.2-0ubuntu1",
        "19.03.6-0ubuntu1",
        "19.03.8-0ubuntu1",
        "19.03.8-0ubuntu1.20.04",
        "19.03.8-0ubuntu1.20.04.1",
        "19.03.8-0ubuntu1.20.04.2",
        "20.10.2-0ubuntu1~20.04.2",
        "20.10.2-0ubuntu1~20.04.3",
        "20.10.7-0ubuntu1~20.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Lei Wang and Ruizhi Xiao discovered that the Moby Docker engine in\nDocker incorrectly allowed the docker cp command to make permissions\nchanges in the host filesystem in some situations. A local attacker\ncould possibly use to this to expose sensitive information or gain\nadministrative privileges.\n",
  "id": "USN-5103-1",
  "modified": "2026-06-25T10:46:02Z",
  "published": "2021-10-04T22:48:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5103-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-41089"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "docker.io vulnerability",
  "upstream": [
    "UBUNTU-CVE-2021-41089"
  ]
}



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