Security advisory

{
  "id": "d4dcd9620507d4bf532c69adeefacd78a4e761a115932d08697d70cc13eac7ae",
  "url": "https://osv.dev/vulnerability/CVE-2021-41089",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-41089",
    "summary": "Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where attempting to copy files using `docker cp` into a specially-crafted container can result in Unix file permission changes for existing files in the host’s filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers do not need to be restarted.",
    "evidence": "osv:CVE-2021-41089",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-41089",
      "aliases": [
        "CVE-2021-41089",
        "GHSA-v994-f8vw-g7j4",
        "GO-2024-2913"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/moby/moby",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "79ea9d3080181d755855d5924d0f4f116faa9463"
                },
                {
                  "fixed": "bce32e5c93be4caf1a592582155b9cb837fc129a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mobyproject:moby:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "20.10.9"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "bce32e5c93be4caf1a592582155b9cb837fc129a"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v20.10.8",
            "v20.10.7",
            "v20.10.6",
            "v20.10.5",
            "v20.10.4",
            "v20.10.3",
            "v20.10.2",
            "v20.10.1",
            "v20.10.0",
            "v20.10.0-rc2",
            "v20.10.0-rc1",
            "v20.10.0-beta1",
            "v19.03.0-beta3",
            "v19.03.0-beta2",
            "v19.03.0-beta1",
            "v18.09.0-ce-tp0",
            "v18.06.0-ce-rc1",
            "docs-v1.12.0-rc4-2016-07-15",
            "v0.7.2",
            "v0.7.1",
            "v0.7.0",
            "v0.6.5",
            "v0.5.0",
            "v0.4.7",
            "v0.4.5",
            "v0.4.4",
            "v0.4.2",
            "v0.4.1",
            "v0.3.2",
            "v0.3.1",
            "v0.3.0",
            "v0.2.2",
            "v0.2.1",
            "v0.2.0",
            "v0.1.8",
            "v0.1.7",
            "v0.1.6",
            "v0.1.5",
            "v0.1.4",
            "v0.1.3",
            "v0.1.2",
            "v0.1.1",
            "v0.1.0",
            "upstream/0.1.3",
            "0.0.3",
            "upstream/0.1.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-41089.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:55.940534982Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B5Q6G6I4W5COQE25QMC7FJY3I3PAYFBB/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNFADTCHHYWVM6W4NJ6CB4FNFM2VMBIB/",
        "https://github.com/moby/moby/security/advisories/GHSA-v994-f8vw-g7j4",
        "https://github.com/moby/moby/commit/bce32e5c93be4caf1a592582155b9cb837fc129a"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "34"
                  },
                  {
                    "last_affected": "34"
                  },
                  {
                    "introduced": "35"
                  },
                  {
                    "last_affected": "35"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-41089",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384768,
  "published_at": "2021-10-04T21:15:12.62+00:00"
}